Computer Systems

Computer systems

ACKNOWLEDGEMENT I express my profound gratitude to my lecturer, Mr.Thasneem, Institute of BCAS, for his invaluable guidance, support and encouragement throughout this study. His helpful suggestions have been greatly appreciated at every stage in the preparation of this study. I thank all the people who help me to do this report in an effective manner. I thank BCAS to giving me such individual assignment to gain my knowledge most practical in Employability and professional development. Finally, I wish to thank my parents, colleagues and friends who gave a valuable support. Once again I thank all of them. Thank You

1 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Contents Introduction ......................................................................................................................................... 3 Task 1.1 ................................................................................................................................................. 4 Task 1.2 ............................................................................................................................................... 10 Task 1.3 ............................................................................................................................................... 23 Task 2.1 ............................................................................................................................................... 27 Task 2.2 ............................................................................................................................................... 30 Task 3.1 ............................................................................................................................................... 39 Task 3.2 ............................................................................................................................................... 40 Task 4.1 ............................................................................................................................................... 47 Task 4.2 ............................................................................................................................................... 55 Conclusion ....................................................................................................................................... 62 Conclusion ......................................................................................................................................... 63 References list .................................................................................................................................. 64

2 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Introduction The major purpose of this assignment is to understand computer systems and apply theoretical knowledge to practical when building, configuring and maintaining computer systems in different environments and it contains hardware components, software and peripherals. Maintenance of computer system and the way in which it works, should be made clear for BCAS. Different types of computer systems that are available in IT environment are identified and purposes are showed. Custom-built computer system includes the guide lines and the security implementations of methods are concerned. Test criterias to detect faults and trouble shoot peripheral devices, hardware and software. This unit explores system design specification for all departments of BCAS. Especially multimedia department has been concentrated on game development and mobile application development.

3 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Task 1.1 Computer systems are rule world because everything is running by using computers and it’s related to studying, designing and developing information using computers. Computer systems are growing faster minute by minute and day by day. Computer systems perform different roles in different departments of BCAS. Such as 

Multimedia Department



Finance and Accounts Department



Administration Department

Multimedia Department Computer systems are used in Multimedia department for many purpose and it's perform sounds, graphics, animation and audio to come up with a multimedia works when it’s needed. In multimedia computer system are used for following purposes in BCAS:  To do advertising functions  To do web design  To do computer gaming Advertising functions Computer systems perform various roles for Advertising in multimedia department. Many staffs of BCAS do creations on logo designs, brochures, business cards, billboards, banner and posters by using application software in computer system such as Adobe Photoshop, Adobe illustrator and Corel draw. Following roles are performed by computer system for advertising in Multimedia department of BCAS  Many organizations are using logo for their own company. So, to create logo they are using adobe illustrator application software in computer system. Example - Colleges logo such as Bcas, Acbt and ANC logos, Sports logo such as cricket and football (IPL logo, SLPL logo and FIFA) and country logos. So, everything has been created by computer systems.  BCAS providing brochures which are created by using Adobe illustrator in computer system. Example - BCAS brochures about courses and Bank brochures about new accounts.

4 S. Sutharshan (BCAS, Batch IT-41)

Computer systems  Business cards are providing by BCAS about their services, which has been created by using Adobe illustrator in computer system.  BCAS bill boards and banners are used in public area, in every bill boards and banners designs are created by using multimedia softwares in computer system. Web design functions One of the computer systems roles in the multimedia departments is creating web design. Currently there are billions of websites that available on the internet. Every web design has been created by multimedia applications in computer system. Computer systems are help to do web designing functions and it contains web layouts, flash contents, templates, scripts and coding. Following roles are performed by computer system for web designing in Multimedia department of BCAS  Web layout is creating something that’s visually attractive. Every website has layouts which are designed by Firework application software. The web layouts such as 3D Screenshots, Advanced Grid and Fixed Sidebar.  In the websites there are many contents showing by flash such as about discounts, new arrivals and advertisements. So every flash contents are created by using Adobe flash in the computer system.  HTML editor, Web Easy Professional and HTML-Kit Tool software are used to creative solution templates, interior design templates and generic templates.do website templates and in the templates every design are designed by using Adobe Photoshop and Adobe illustrator in computer system. Examples of templates  Computer system helps to do script and coding for web designing by using application software example - Dream viewer software which do jquery, HTML and CSS scripts. (10 Rock Solid Website Layout Examples,2011)

5 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Computer gaming Computer systems help to do gaming development which includes graphics, 3D and visual effects by using gaming software such as Sploder, Game Maker 8 and RPG Maker XP. Following roles performed by computer system in gaming  In the game mostly games developers are used various background and creative images which has been designed in Adobe Photoshop by using computer system. Example - In the Need for speed game there are many creative backgrounds are used.  Computer system helps to do graphics works by using softwares such as Ultimate Paint andKarbon14. So, these softwares helpful to do digital graphics and photographs.  Computer system is used for 3D purpose also. It includes rendering, animating, compositing, creating interactive 3D applications, skinning, texturing and UV wrapping. Example - By using 3D Canvas software in computer system, will help to 3D works in gaming.  Visual effects editing also another important thing in gaming. So computer system help to do visual effecting by software such as Autodesk Flare and Adobe After Effects CS6 So, mainly computer systems performed various roles in advertising, web designing and gaming in multimedia department of BCAS. (5 Free Game Development Software Tools To Make Your Own Games, NA)

6 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Finance and Accounts Department Computer systems needs to do finance and accounts functions in the BCAS and it helps to control the expenditure. A computer system processing finance and accounts information with up-to-date time regarding the BCAS's performance. Mainly applications software helps to do accounting, scheduling, billing and word processing functions such as for accounting there are some software Accpac and Myob, for billing there is a software available call Tradeshift, for word Msoffice is there. So, these software’s requires computer system to perform finance and accounts functions. Following roles are performed by computer system in finance and accounting department of BCAS  Computer

system

processing

general

ledger

system,

accounts

receivable system, accounts payable system, budgeting system, funds management systems to do finance functions by accounts package softwares such as Accpac and Myob.  Computer systems keep BCAS financial assets and funds also That means it will keep electronic records of money received and paid out by the BCAS. To keep records there are some sofwares used in the computer system such as MS access and MS excel. By using computer system in Accounts and finance department following functions processing:  Budgeting  General ledger  Billing  Cost accounting  Profit planning To do finance and accounts functions mainly need mainframe and supercomputers. These are help to process many transactions and its accurate and speed data processing. So, computer system performs many roles to do finance and account functions. (Types of Computers Used in the Government, NA)

7 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Administration Department Administration department is responsible to keep records of customers in BCAS and to administrate all computers which have been used in BCAS. Example – In BCAS Administration department, they are keeping students' records such as student's information and students' assignments by using computer systems.

Following roles performed by computer systems in Administration department  Computer system using in Administration for many purpose such as type letters, keep BCAS's income and expenditure and helps to compile information.

Examples:  For type letter MS Word is using in the computer system.  For calculation Ms excel using in the computer system.  For compile information MS Access using in the computer system.  Computer system helps to do routine works of the BCAS such as bill payment, payments transactions and Convey messages

Bill payment: most of the admin staffs paying electricity and water bill of the BCAS by using internet. Example: If the BCAS has bank accounts Admin staffs can pay the bill by browsing organization accounts page.

Payments transactions: Admin staffs can make money transaction to branches of the BCAS by using particular bank website. Example: Western Union providing money transferring so, if the BCAS has bank accounts, they can transfer money branch into branch by visiting Western Union webpage in computer system. Convey messages: If Admin staffs need to convey any message they are using email to do that such as gmail and hotmail. So, mainly computer system performs to do bill payment, payment transactions and convey messages.

8 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Computer system helps to share the information and communication in Administration department of BCAS by using network. Example Admin using internet to get information and share information but internet is works because of WAN network. (Wide area network) To perform network minimum desktop computers are needed. Following roles are performed by computer systems to do network functions:  File sharing: Network of computers help to share data files in administration department.  Hardware sharing: Users of computers can share devices such as printers, scanners, and CD-ROM drives to do administration works.  Application sharing: Network of the computers help to share Applications over the network. So, if the administration department has 15 computers by using network they can share applications which is help to do specific jobs.  Communication sharing: Networks of computers help to communicate within administration staffs by using e-mail, newsgroups, forums, and video conferencing.

(Why do we need computer networking?,2010)

9 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Task 1.2 Components of the Computer

1. Monitor 2. Motherboard 3. CPU (Microprocessor) 4. Primary storage (RAM) 5. Expansion cards 6. Power supply 7. Optical disc drive 8. Secondary storage (Hard disk) 9. Keyboard 10. Mouse (Figure 1)

Hardware Hardware is physical components of computer, its including digital circuitry and it can be touched such as system unit, mouse, keyboard etc. Hardware can be arranged in main categories such as:  Input devices  Output devices  Internal storage  Central processing unit (CPU)

Input devices Input devices allow user to input information to the computer and its unprocessed data such as keyboard, mouse, scanner, microphone and digital camera. Output devices Output devices allow user to output information from the computer and its processed data such as monitor, printer and projectors.

10 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Internal storage It's directly accessible by the processor also known as such as main storage such as registers, cache and main memory. 1. Registers Registers are temporary memory which store words and its located in the processer. It also known as volatile memory that means it will not work when electricity is not supplied. Registers examples are PC, AC, IR, TIR, +1, AMASK, MAR and MBR. 2. Cache memory It's located on CPU chip and it’s faster than RAM (registers) From

this

picture

you

can

understand where cache memory is located and how its work. It's

located

between

main

memory and CPU.

(Figure 2)

Example: If you type any word in search it will request to CPU then CPU will check in the cache whether data is available or not. If it the data is available in the cache CPU will get from it. If not, Cache will check in the Main memory if present Main memory delivers from Cache to CPU. 3. Main memory This is a semi-conductor memory. Main memory is made of dynamic memory andits slower than cache memory. There are 2 types of main memory  RAM(Random Access memory)  ROM(Read only memory) RAM RAM store programs, input data an information. Its volatile memory that means the stored data will be erased, when the power is not supplied. It also known as temporary memory and holds the information as long as there is electric power. There are three types of RAM. Those are:  Dynamic RAM (DRAM)  Synchronized DRAM (SDRAM)  Static RAM (SRAM) 11 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Dynamic RAM It needs refreshing even when powered and it’s slow. The speed of DRAM is based on CPU speed. Synchronized RAM Its run higher clock speeds than conventional memory. SDRAM actually synchronizes with the CPU's bus. It's running at 133 MHz. Static RAM (SRAM) It noneed refreshing when powered and its high speed memory. ROM This is permanent memory to store software programs it can be system software or application software. ROM is a non-volatile memory. There are three types of ROM  PROM – Programmable ROM  EPROM – Erasable Programmable ROM  EEPROM – Electrically Erasable Programmable ROM

Central Processing Unit (CPU) CPU is the brain of computer and it’s consist of  Arithmetic and Logic unit(ALU)  Control Unit Arithmetic and logic unit (ALU) ALU

perform

two

functions

such

as

Arithmetic functions and Logical functions. Control unit It does calculations and coordinates to motherboard components

(The CPU is also known as the processor or

(Figure 3)

microprocessor)

12 S. Sutharshan (BCAS, Batch IT-41)

Computer systems How CPU works

(Figure 4) The CPU process the data and programs then the data bus transferring the data to RAM So, It can be stored in the RAM and displayed on monitor. Mother board The main printed circuit board inside the PC which contains and controls the components. That is responsible for processing data and programs. Mother boards holds 

The processor



Memory



Expansion Slots

It connects directly or indirectly to each part of the PC.

(Figure 5) Above I have given mother board picture 13 S. Sutharshan (BCAS, Batch IT-41)

Computer systems AGP Slots

AGP stand for Accelerated Graphics Port. It's created especially for display cards. There is only one AGP slot in the motherboard and AGP slots works 128bit to provide more data transfer among processor.

(Green part is AGP slot) (Figure 6) PCI Slots

PCI stand for Peripheral Component Interconnect. It's communicates with an ISA and local bus using chipsets and bridges. PCI slots much faster than ISA slots. PCI is the oldest slot still common on motherboards but it has been replaced by AGP and PCI Express slots. (Figure 7)

(Whit parts are PCI slots)

PCI-Express Slot

PCI Express designed to replace AGP slot and PCI slot. It is currently used for video cards and other adapter cards.

(Figure 8) (Blue parts are PCI- Express slot) Above slots are commonly call Expansion slots.

14 S. Sutharshan (BCAS, Batch IT-41)

Computer systems ATX Connector ATX

connector

supply

power

to

the

motherboard and the connection comes from Power

supply.

Power

supply

provides

necessary energy with power unit to ATX connector. (Figure 9) (White part is ATX connector)

IDE Connector IDE Connector stands for Integrated Drive Electronics. There are two IDE connectors on the motherboard and this connector for hard disc and CD-ROM that mean IDE connectors provide connection among hard disc and CDROM by data cable. Currently now are days (Figure 10)

using SATA cable which provide connection to two devices.

(Blue and black parts are IDE connector)

FDD Connector

FDD stand for Flop Disk Drive connector. Floppy disk plug is here to fix and it helps to transfer data Floppy disk to motherboard. It has 34 pins. (Figure 11) (Black part is FDD connector)

15 S. Sutharshan (BCAS, Batch IT-41)

Computer systems BIOS

BIOS stand for basic input output system. BIOS help to prepare hardware and software for working computer (booting). Some main features can be adjusted by BIOS. (Figure 12) (Black part is BIOS)

Chipsets Chipsets is a kind of processor that manages interface relation and provides data transferring. Basically there are two types of chipset which are call North Bridge and south bridge. North bridge chipset

North bridge chip is help to control AGP, RAM and CPU.

(Figure 13) (Black part is North bridge chipset) South bridge chipset

South bridge chip is help to control PCI Slots, USB, IDE and BIOS.

(Figure 14) (Black part is south bridge chipset)

16 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Here I have Input Output ports that available in the mother board.

(Figure 15)

Hard disk

A hard disk is also called hard drive or hard disk drive. It stores and provides quick access to large amounts of data on set of surfaces. Currently hard disk contains several billion bytes gigabytes of storage. Hard disk usually consists up to 12 platters. Each platter needs two read/write heads one for each side. All the read/write heads are inserted to a single access. So it will not work independently. (Figure 16)

17 S. Sutharshan (BCAS, Batch IT-41)

Computer systems CMOS battery

It keeps current time of your computer. CMOS battery requires little power to retain its contents.

(Figure 17) Power supply unit

It also called a PSU. It converts the power provided from the outlet to the components of CPU. Power supply units are rated by voltage.

(Figure 18)

Cooling units

Computer cooling helps to remove heat produced by computer components of computer.

(Figure 19)

18 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Software Computer software is a collection of programs and symbol languages that perform some task on a computer system. It's  Consist of step by step instruction and it will instruct to the computer what to do and how to do it.  Needs some media to execute.  Divides into two types one is system software another one is application software. System software System software is set of programs which control and contribute to computers' performance and it also brings different hardware configurations into common platform. Basically there are three types of system software;  Operating System  Language Translators  Utility Programs Operating system Operating system is software which helps to control the execution of computer programs. It’s providing many services to user. Examples: Microsoft Windows 7, Mac OS X, Linux and Ubunthu. Language translators Language translators are translating programs that written by a programmer into machine language. By using language translators computer hardware can understand the programs what written by programmer. Example: CAT Utility programs It helps to support and expand the existing programs in a computer system. Examples: Virus Scanners, Disk Defragmenters, Disk Checkers, Encryption utilities and Backup software. 19 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Application software Application software is made for to do specific job and it helps to create communication between user and hardware. It has two types;  Special purpose software  Be- spoke software  Language software

Special purpose software Special purpose software is created software and its help to execute specific tasks. Example: MS office Here I have given some examples of special purpose software  For word processing - MS word and Word perfect  For spread sheet - Microsoft excel and Lotus approach  For databases - Microsoft access and Lotus approach  For presentation - Microsoft power point and Lotus freelance Be-spoke software Be- spoke software is made for specific user and force purpose. Example:  Hospital and its medical equipment’s made for specific user  Freelancer System (Newspaper Industries)

Language software Language software is application software which is used to create new software. Examples: Java and VB

20 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Peripheral devices Input devices, output devices and secondary storage devices are called peripheral devices.These devices help to input data into the computer and output data from the computer. Input output devices are very common and some devices are very rarely. The common input output devices are keyboard, monitor and the mouse. Other peripherals are microphone, webcam, scanner, printer and plotter. Microphone

Microphone is an input device that allows to speech as data. It allows recording which are giving as input and transmitting the data it to others over the internet. (Figure 20) Webcams

It's an input device allow us to capture images and record videos to transfer into a computer in the format of an image file or video file. It's measured in pixels. (Figure 21) Scanner

Scanner is an input device allows us to translate images such as picture or documents into digital form. (Figure 22)

21 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Printer

Printer is an output device that helps to create of a hard copy of textual and photographic. Its speed measured in Pages per Minute (PPM).

Plotter

Plotter is an output device that helps to designed and produces high quality graphics in a variety of colors. Example: Drum plotters, Flatbed plotter s and Electrostatic plotters. (Figure 23)

(4 Main Parts of a Computer System, NA)

22 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Task 1.3 Types of computer systems    

Micro Computers Mini Computers Mainframe Computers Super Computers

Micro Computers Micro computers are small in size. It’s used

for

personal.

Mainly

Micro

computers are help to data processing. The processing speed of Microcomputer is

100-kilo

byte

per

second.

Micro

computer storage capacity is within the range of MB to GB. The peripherals are used in Micro systems such as keyboard, (Figure 24)

monitor, printer, mouse, scanner and plotter.

Micro Computer systems are used for following purposes:  Accounting  Entertainment  Word Processing Example for Microcomputer systems:  Desktop computers  Laptops  Mobile computers

23 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Minicomputers

It’s a Midrange computers which fallen in between mainframe

computers

and

microcomputers.

Minicomputer systems speed is 500-kilo byte per second. In minicomputers also peripherals are used such as printer, magnetic tapes, magnetic tapes and hard disks. It has large storage capacity

(Figure 25)

and its used for LAN services. Minicomputers are used for following purposes:  Engineering  Scientific Research  Database System Examples for Mini computers:  IBM RISC 6000  HP mini computer Mainframe Computers The Mainframe computers are huge size. Its can process large amount of data at a very high speed. The prices are in millions of dollars. Mainframe computers are designed to allow multiple users. The speed of Mainframe computer (Figure 26)

is1-10 million per second. It’s including line printer, high-speed magnetic tapes and hard disks for

input output processing. Thestorage capacity of Mainframe computers are used for following purposes: these computers is very high. It's specially used  Corporate and organizations functions for WAN services.  Bulk data processing  Enterprise planning and transaction processing Examples for Mainframe computers:  IBM 704  IBM 370/168  DEC 1090  CYBER 170 24 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Supercomputers

Supercomputers are designed to process complex scientific jobs. Supercomputers are largest fastest and most expensive system in the world. Prices are 5 million to $50 million. These supercomputers are used in large organizations to do calculations at very (Figure 27)

large scale. The speed of Supercomputer is 1 trillion floating-point operations per second.

Supercomputers are used for following purposes:  Weather forecasting  Climate research  Molecular modeling  Oil and gas exploration  Physical simulations Examples for Supercomputers:  IBM Roadrunner  IBM Blue Gene/L

(Types of Computer, NA) (Major Types of Computer Systems, NA) (Types of Computers Used in the Government,NA)

25 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Comparison between computer systems

Comparison

Micro

types

Computers

Work place

Small

Less

Mini Computers

Mainframe

Super

Computers

Computers

Medium

High

Huge

High

High(More than

Huge

Size Cost

minicomputers)

Speed

Less (100 kb

More than

High(is1-10

per second)

microcomputers(500kb million per

floating-point

per minute)

operations per

second)

Huge(1 trillion

second) Capacity

Less

More than micro

High

Huge

WAN

Large

Environment

Organizations

computers Environments

Home and

LAN Environment

Office  Desktop Examples

computers

 IBM RISC 6000

 IBM 704

 HP mini computer

 IBM 370/168

 Laptops

 DEC 1090

 Mobile

 CYBER 170

 IBM Roadrunner  IBM Blue Gene/L

computers Using purposes

 Accounting

 Engineering

 Entertainment

 Scientific Research

organizations

 Word

 Database System

functions

Processing

 Corporate and  Weather

 Bulk data

forecasting  Climate research

processing

 Molecular

 Enterprise

modeling

planning and transaction

 Oil and gas exploration

processing (Table 1) 26 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Task 2.1 System design specification for Multimedia department

Specifications

Requirements

Reason

Processor

Intel Core i3-

Currently Intel is leading company and i3-2100

2100(Speed - 3.10

processor has some new graphics specification such as Intel® InTru™ 3D Technology, Intel®

GHz)

Flexible Display Interface (Intel® FDI and Intel® Clear Video HD Technology which are helpful to do multimedia works.

RAM

DDR3 (4GB)

DDR3 (4 GB) will offer best performance and it will take less loading time for applications.

Video card

AMD Radeon HD

AMD Radeo HD 6450 is specially designed for

6450(VRAM- 0.5GB)

multimedia purpose and it offer DirectX® 11, HD3D technology and multi-display technology which help to create ultimate multi-monitor desktop workstation.

Power supply

Powerlogic(350Watts)

unit Hard Disk

High video cards are using in Multimedia department So, it require 350 watts.

Seagate HDD(500 GB)

Drive

Currently Seagate is a famous for HDD and Multimedia department requires lot of space. Prices of Seagate hard disk drives are very low than other hard disk drives.

Operating

Windows 7 home

system

premium(64 bit)

Windows 7 is the latest operating and it will support all multimedia software.

(Table 2) In system design specification I have mention everything as a best and cost of this SDS will increase because its designed for

Multimedia site which

updated and growing rapidly

currently in the world. (Intel® Core™ i3-2100 Processor (3M Cache, 3.10 GHz), NA) 27 S. Sutharshan (BCAS, Batch IT-41)

Computer systems System design specification for Finance and Accounts department

Specifications

Requirements

Reason

Intel Core 2 Quad

Intel Core 2 Quad Q6600 processor has

Q6600 Processor

Technology

which

helps

to

increase manageability, security, and flexibility in (Speed - 2.40 GHz)

RAM

Virtualization

DDR2 (2GB)

Finance department and Accounts department. DDR2 (2 GB) will offer enough performance to do finance and accounts functions.

Video card

Nvidia GeForce

GeForce GT520 offer DirectX 11, CUD and

GT520(VRAM- 0.5GB)

PhysX technologies. So, these technologies will enough to do accounts and finance functions.

Hard Disk

Seagate HDD(300 GB)

Drive

300 GB space enough to keep information of accounts and finance department. Prices of Seagate hard disk drives are very low than other hard disk drives

Power supply

Powerlogic(250Watts)

unit

250 Watts power supply unit enough for finance and accounts purpose computers.

Operating

Windows 7 home

Windows 7 is the latest operating and it will

system

premium(64 bit)

support all accounts and finance software.

(Table 3) (Intel® Core™2 Quad Processor Q6600 (8M Cache, 2.40 GHz, 1066 MHz FSB), NA)

28 S. Sutharshan (BCAS, Batch IT-41)

Computer systems System design specification for Administration department

Specifications

Processor

Requirements

Reason

Intel Pentium 4

Intel Pentium 4hasHyper-Threading Technology

(Speed - 3.00E GHz)

which

helps

to

do

higher

processing

of

administration works.

RAM

DDR(2GB)

DDR (2GB) will offer enough performance to do Administration works.

GeForce620 Video card

Nvidia GeForce 620(VRAM- 0.5GB)

offer

Seagate HDD(200 GB)

Drive

11,

ultra-realistic

effects, unmatched multimedia functionality, and the performance for all applications.

200 GB space Hard Disk

DirectX

enough to keep information of

Administration department and prices of Seagate hard disk drives are very low than other hard disk drives.

Power supply

Powerlogic(250Watts)

unit

250 Watts power supply unit enough for Intel Pentium 4 computers.

Operating

Windows 7 home

system

premium(32 bit)

Windows

7(32bit)is

supported

to

above

requirements and it will support to all applications which are used in Administration department.

(Table 4) (Intel® Pentium® 4 Processor supporting HT Technology 3.00 GHz, 1M Cache, 800 MHz FSB, NA)

29 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Task 2.2 Multimedia department Following software are used in Multimedia department.  Adobe PhotoshopCS5 Extended  Adobe illustrator CS5  Adobe InDesignCS5  Adobe Acrobat 9.3 Professional  Adobe Flash Catalyst CS5  Adobe Flash Professional CS5  Adobe DreamweaverCS5  Adobe Fireworks CS5  Adobe PremierePro CS5  Adobe After Effects CS5 (These above software are come under CS5 MasterCollection) Adobe Photoshop (CS5 Extended) Adobe Photoshop CS5 designed to do graphics and editing in the images. Photoshop CS5 has some new features such as content-aware fill which helps us to remove any object from a picture and magically fill the space in the removed area. Adobe Photoshop has make complex selections as easier such as adding new painting effects and changing a photograph into an art. Adobe illustrator CS5 Adobe illustrator designed to make illustrations such as cartoon books designs and packaging labels designs. Adobe illustrator CS5 helps to do round trip editing with Flash Catalyst and raster effects.

Adobe InDesign CS5 Adobe InDesign CS5 is a desktop publishing program. It's used in many newspapers, advertising agencies to publish their works. Adobe InDesign helps to create interactive documents and presentations which feature motion, sound and video.

30 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Adobe Acrobat 9.3 Professional Adobe Acrobat has set the standard for document creation and it helps to transfer across internet. Adobe Acrobat 9.3 has wraps animation and Video into PDF. It allows to package layouts, images, video and animations into one file. Adobe Flash Catalyst CS5 Adobe Flash helps to transform Photoshop, Illustrator and Fireworks artwork into interactive projects. Adobe Flash Catalyst CS5 no needs any coding to transform Photoshop, illustrator and fireworks into projects. Adobe Flash Professional CS5 Adobe Flash Professional helps to do animation, motion graphics and animated clips. Adobe Flash Professional CS5 has some new features such as Code Snip pits, Text Layout Framework and Inverse Kinematics. Adobe Dreamweaver CS5 Adobe Dreamweaver CS5 helps to do web designing and it has some new features such as Browser Lab and Catalyst services. Adobe Fireworks CS5 Adobe Fireworks CS5 makes the imaging processing easily and it helps to create interactive designs and graphics. Adobe Fireworks has features such as Auto shapes, Toolbar Style and Photoshop Interface. Adobe Premiere Pro CS5 Purpose of Adobe Premiere Pro is helps to edit video files in many ways. It has new features such as high-performance editing workflow, Warp Stabilizer effect and Three-Way Color Corrector. Adobe After Effects CS5 Adobe After Effects helps to creative visual effects and motion graphics in Video. It has new features such as Roto Brush tool, support for AVC-Intra and RED tapeless formats.

(The Works: What’s Included in Adobe CS5 Master Collection, 2010)

31 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Here I have given the system requirements of Adobe CS5 Master Collection (Which include above software)  Computer: Intel Pentium 4 or AMD Athlon 64 processor (Intel Core i3, i5, i7, or AMD Phenom II recommended); Intel Core 2 Duo or AMD Phenom II required for Premiere Pro; CPU with 64-bit support required for Premiere Pro and After Effects  Operating System: Windows XP SP3, Vista SP2, 7; Vista (64-bit) or 7 (64-bit) required for Premiere Pro and After Effects  Memory: 2GB (4GB recommended)  Hard Drive: 24.3GB (Additional free space required during installation; Cannot install on removable flash storage devices); 7200rpm hard drive required for editing compressed video formats; RAID 0 array required for editing uncompressed formats  OpenGL graphics card, 16-bit color, and 256MB of VRAM; Adobe-certified GPU card for GPU-accelerated performance in Premiere Pro; Some GPU-accelerated features require graphics support for Shader Model 3.0 and OpenGL 2.0; Some features in Adobe Bridge rely on a DirectX 9 capable graphics card with at least 64MB of VRAM (Adobe Creative Suite 5.5 Master Collection Software for Windows (Upgrade from CS5 Master Collection), NA) Justification System design Specifications

specification

Software requirements

requirements

Processor

Intel Core i3-2100

Justify( )Or Not×)

(Intel Core i3, i5, i7)



(Speed - 3.10 GHz)

RAM

DDR3 (4GB)

4GB recommended



Video card

AMD Radeon HD 6450,

(VRAM256MB)GPU



DirectX11(VRAM-

card should offer

0.5GB)

DirectX 9

32 S. Sutharshan (BCAS, Batch IT-41)

Computer systems  Hard Disk Drive Seagate HDD(500

Hard Drive: 24.3GB

GB)

(Else space to keep multimedia works for a long time)

Operating

Windows 7 home

XP SP3 or Windows

system

premium(64 bit)

7(64bit)



(Table 5)

Finance and Accounts department Following software are used in Finance and Accounts department.  QuickBooks Pro Small Business Accounting Software  QuickBooks SimpleStart 2010 Software  ACCPAC Advantage Series Enterprise Edition QuickBooks Pro Small Business Accounting Software QuickBooks has everything about business finance and accounts functions. It helps to create Estimates, Quotes and Invoicing, Cash Flow, VAT and helps to calculate employee time and job costs of the organizations. QuickBooks Simple Start 2010 Software QuickBooks Simple Start is easy-to-use and free accounting software designed to help small business. It helps to makes estimating, invoicing, accepting payments, Tax, and keeping organizations' finances quick and easy. (Above two software are come under Quick book package.) Here I have given the system requirements of Quick book package (Which include Quick book start and pro software)  2.0 GHz processor; 2.4 GHz recommended  1 GB RAM for single user, 2 GB RAM recommended for multiple users  Display optimized for 1024 x 768 screen resolution or higher; 16-bit color or higher windows  2.5 GB of disk space (additional space required for data files) 33 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

 additional software: 250 MB for Microsoft .NET 4.0 Runtime, provided on the QuickBooks CD  Additional requirements

for Intuit Data Protect in QuickBooks Connected Services

offerings 

Require minimum 2.0 GB Ram



Twice the size of the largest File set to back up + 100MB

(QuickBooks Pro 2010 Small Business Accounting Software, NA) (QuickBooks Pro or Premier hardware and operating system requirements (client and server),NA) Justification

System design specification Specifications

requirements

Software requirements

Justify( )Or Not×)

Processor

Intel Core 2 Quad

2.0 or 2.4 GHz

Q6600 (Speed - 2.40

recommended



GHz) RAM

DDR2(4GB)



1GB or 2GB RAM

(Else to work speed)  (Else space to keep Hard Disk Drive

Seagate

Hard Drive 2.5GB

HDD(300 GB)

Operating system

Windows 7 home

Finance and accounts works for a long time)

(16bit) Windows



premium(64 bit) (Table 6)

34 S. Sutharshan (BCAS, Batch IT-41)

Computer systems ACCPAC Advantage Series Enterprise Edition ACCPAC Advantage Series Enterprise Edition is a business management system that provides entire accounting system. It helps to do finance and accounting functions such as General Ledger, Accounts Payable, Accounts Receivable, Inventory Control, Order Entry, Purchase Orders, Payroll and Transactions modules are also available. System requirements of ACCPAC Advantage Series Enterprise Edition 

Intel Core 2 Duo or higher



2GB RAM (XP)



4GB RAM (Vista/Windows7)



5 - 10 GB space



Windows XP Pro, Vista, Windows 7

(Sage ERP Accpac Compatibility Guide, Recommended Hardware Specifications, NA)

Justification System design Specifications

specification

Software requirements

requirements

Processor

Justify( )Or Not×)

Intel Core 2 Quad

Intel Core 2 Duo or

Q6600

higher



(Speed - 2.40 GHz)

RAM

DDR2(4GB)



2GB RAM for XP or 4GB RAM for

(Else to work

windows7

speed) 

Hard Disk Drive

Seagate

5 - 10 GB

HDD(300 GB)

(Else space to keep Finance and accounts works for a long time)

Operating system

Windows 7 home

Windows 7 or XP or

premium(64 bit)

Vista



(Table 7)

35 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Administration Department Following software are used in Administration department  Microsoft Word 2010  Microsoft Excel 2010  Microsoft Access 2010  Microsoft Outlook 2010  Microsoft Publisher 2010 Microsoft Word 2010 Microsoft Word is word processing software it helps to produce letters and memos. By using MS Word easily we can mail a merge list of names and address to many mailers. It has some new features such as edit and applies effects to the picture and edit a document with other authors at the same time. Microsoft Excel 2010 Microsoft Excel is spreadsheet software which allows to do company's income. Expenditure and calculate the balance. It has new features such as Highlight data trends in seconds using Spark lines. Microsoft Access 2010 Microsoft Access is database software which allows creating and modifying databases. It has new features such as easily automate common tasks by using the Macro Designer and exploring data easily by using drag-and-drop navigation forms. Microsoft Outlook 2010 Microsoft Outlook designed for mail service and it helps to share mailboxes and calendars, Exchange public folders and SharePoint lists. It has new feature that is, it’s connected with social and business network updates. Microsoft Publisher 2010 It helps to create professional newsletters, brochures and post cards. It has new alignment guidance technology which provide align shapes, images, and text. (Above software are comes under Microsoft Office Home and Business 2010 Package.)

36 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Here I have given the system requirements of Microsoft Office Home and Business 2010 Package.  500 MHz or faster processor  256 MB RAM; 512 MB recommended for graphics features, Outlook Instant Search, and certain advanced functionality.  3.0 GB available disk space  Operating system Windows XP (must have SP3) (32-bit), Windows 7, Windows Vista with Service Pack (SP) 1, Windows Server 2003 with SP2 and MSXML 6.0 (32-bit Office only), Windows Server 2008, or later 32- or 64-bit OS.  Graphics hardware acceleration requires a DirectX 9.0c graphics card with 64 MB or more video memory.  512 MB RAM recommended for accessing Outlook data files larger than 1GB.  2 GHz processor or faster and 1 GB RAM or more recommended for OneNote Audio Search. (What's new in Office 2010?, NA) (Microsoft Office 2010 system requirements, NA) Justification

System design specification Specifications

Processor

requirements

Software requirements

Intel Pentium

500 MHz or faster

4(Speed - 3.00E

processor

Justify( )Or Not×)



GHz) RAM

DDR(2GB)



512MB or 1 GB or faster than 1GB

(Else to workspeed)

37 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Video card

Nvidia GeForce 620,

(VRAM512MB)GPU

DirectX 11(VRAM-

card should offer

0.5GB)

DirectX 9.0



 (Else space to keep Hard Disk Drive

Seagate

Hard Drive: 3.0 GB

HDD(200 GB)

Operating system

Windows 7 home

Administration works for a long time)

XP SP3 or Windows7



premium(32 bit) (Table 8)

38 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Task 3.1

 Guidelines to configure, computer system  Include guidelines for hardware, software customization  Give users security implementation methods Relevant guidelines are recorded and it’s been provided in the CD. The name of the folder is “Task 3.1”

39 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Task 3.2 Standard test criteria to detect Floppy disk drive

Steps to test floppy disk drive

YES

NO

1. Plug the floppy drive into the appropriate place and turn on the monitor and PC 2. Run the ROM BIOS setup program and set the correct drive type 3. Install Check it or XT/AT diagnostics software 4. By using XT/AT diagnostics software check floppy drive's operation 5. Is the floppy disk drive detected and performed? (Table 9) In the above table  If all steps get “YES”, your Floppy disk drive works properly.  If of one of the step get “NO”, test again and make sure that the floppy drive is correctly placed to the CPU. Then also it is not worked, the floppy disk drive dead and replace new floppy disk drive.

Standard test criteria to detect Hard disk

Steps to test hard disk

YES

NO

1. Plug the hard drive into the appropriate place, connect the power data cable to the HDD and motherboard and turn on the PC 2. Run the ROM BIOS setup program and do hard disk drive auto detecting 3. Install and check with Disk Manager or Check it or XT/AT diagnostics software to check hard disk’s operation 4. Is the hard disk drive detected and performed? (Table 10) In the above table  If all steps get “YES”, your hard disk drive works properly.

40 S. Sutharshan (BCAS, Batch IT-41)

Computer systems  If of one of the step get “NO”, test again and make sure that the hard disk drive is correctly placed to the CPU. Then also it is not worked, the hard disk drive dead and replace new hard disk drive.

Standard test criteria to detect Monitor

Steps to test monitor

YES

NO

1. Clean the RAM by Harris brush and properly insert into memory slot on the motherboard 2. Clean the VGA card by Harris brush and properly insert into AGP slot on the motherboard 3. Plug the monitor power cable into the appropriate place, turn on the computer and check monitor is working or not 4. Install and check with Check it and HP system advanced diagnostics software to get monitor's display capability 5. Is the Monitor detected and performed? (Table 11) In the above table  If all steps get “YES”, your monitor works properly.  If of one of the step get “NO”, test again and make sure that the monitor power data cable is correctly plugged. Then also it is not worked, the monitor dead and replace new monitor. Standard test criteria to detect keyboard

Steps to test keyboard

YES

NO

1. Plug the keyboard cable into the appropriate place and turn on the PC. 2. Make sure on the keyboard at the right sight top, if the 3 bulbs should not continually blink. 3. Install and check with Check it or XT/AT diagnostics software to check keyboard’s operation 4. Is the Keyboard detected and performed? (Table 12)

41 S. Sutharshan (BCAS, Batch IT-41)

Computer systems In the above table  If all steps get “YES”, your keyboard works properly.  If of one of the step get “NO”, test again and make sure that the keyboard cable is correctly inserted. Then also it is not worked, the keyboard dead and replace new keyboard. Standard test criteria to detect memory (RAM)

Steps to test memory (RAM)

YES

NO

1. Clean the RAM by Harris brush and properly insert into first memory slot on the motherboard 2. Turn on the PC and make sure if the beep sound is not coming 3. Right click the computer, select on properties and see the RAM is mention or not 4. Is the RAM detected and performed? (Table 13) In the above table  If all steps get “YES”, your RAM works properly.  If of one of the step get “NO”, test again and make sure that RAM is correctly fixed. Then also it is not worked, remove the RAM and check into another computer. If the RAM is working on another computer, your PC’s motherboard is damaged. If the RAM is not working on another computer, the RAM dead and replace new RAM.

Standard test criteria to detect processor

Steps to test processor

YES

NO

1. Clean the CPU socket with blower and apply context cleaner 2. Fix the processor over CPU socket and fix the heat sink fan over processor 3. Turn on the PC, run BIOS setup and see the system information 4. Looking at system information, tell is the processor detected and performed? (Table 14) 42 S. Sutharshan (BCAS, Batch IT-41)

Computer systems In the above table  If all steps get “YES”, your processor works properly.  If of one of the step get “NO”, test again and make sure that the processor correctly fixed. Then also it is not worked, remove the processor and check into another computer’s motherboard. If the processor is working on another computer, your PC’s motherboard is damaged. If the processor is not working on another computer, the processor dead and replace new processor.

Standard test criteria to detect power supply unit

Steps to test power supply unit

YES

NO

1. Remove the power supply unit from the casing 2. Take a string and shortened the green wire and black wire in ATX 24/20 pin power connector

3. Take screw driver tester, give power to power supply ,using tester check with the shortened wire and make sure the power supply unit fan is working

4. Is the power supply unit detected and worked? (Table 15) In the above table  If all steps get “YES”, your power supply unit works properly.  If of one of the step get “NO”, test again. Then also it is not worked, the power supply unit dead and replace new power supply unit.

Standard test criteria to detect VGA card

Steps to test VGA card

YES

NO

1. Fix the VGA card into AGP slot 2. Connect the monitor cable to VGA port 3. Turn on the PC, see the display is working and install the driver of VGA card

43 S. Sutharshan (BCAS, Batch IT-41)

Computer systems 4. Right click the computer, select on manage, click on device manager and see the VGA card driver is mention or not 6. Is the VGA card detected and performed? (Table 16) In the above table  If all steps get “YES”, your VGA card works properly.  If of one of the step get “NO”, test again and make sure that the VGA card is correctly fixed on AGP slot. Then also it is not worked, remove the VGA card and check into another computer’s motherboard. If the VGA card is working on another computer, your PC’s motherboard is damaged. If the VGA card is not working on another computer, the VGA card dead and replace new VGA card.

Standard test criteria to detect sound card and network card

Steps to test sound card and network card

YES

NO

1. Fix the sound card and network card into PCI or PCIE slot 2. Connect the speakers’ cable to sound port and connect the network line into Ethernet port. 3. Turn on the PC and install the drivers of sound card and network card 4. Right click the computer, select on manage, click on device manager and see the sound card and network drivers are mention or not 5. Are the sound card and network card detected and worked? (Table 17) In the above table  If all steps get “YES”, your sound card and network card works properly.  If of one of the step get “NO”, test again and make sure that the sound card and network card are correctly fixed on PCI or PCIE slot. Then also it is not worked, remove the sound card and network card check into another computer’s motherboard. If the sound card and network are working on another computer, your PC’s motherboard is damaged. If the sound card and network card are not working on another computer, the sound card and network card dead and replace new sound card and network card.

44 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Standard test criteria to detect Hardware

Steps to test hardware

YES

NO

1. Check the drivers and cables are firmly and correctly connected 2. Check hardware devices are properly installed with driver’s software 3. Check the virus attack and remove it by using antivirus software 4. Remove the unused devices and replace it new one 5. Is the hardware detected and performed? (Table 18) In the above table  If all steps get “YES”, hardware works properly on your computer.  If of one of the step get “NO”, test again and make sure that the hardware devices and cable are correctly fixed and driver’s software is installed. Then also it are not worked, the hardware devices dead and replace new hardware devices which are not worked.

Standard test criteria to detect Software

Steps to test software

YES

NO

1. Check the virus attack and remove by antivirus software 2. Check your software are installed properly 3. Try to re-install it again with same software cd 4. Run scan disc for your computer 5. Make sure the above process are done with windows safe mode 6. Is the software detected and worked? (Table 19) In the above table  If all steps get “YES”, software works properly on your computer.  If of one of the step get “NO”, test again and make sure that all the software are re-installed properly with windows safe mode. Then also it are not worked, the software are corrupted and re-install it properly. 45 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Standard test criteria to detect Peripheral devices (printer, scanner, plotter and etc..)

Steps to test Peripheral devices

YES

NO

1. Plug the peripheral devices power cable into the appropriate place on the motherboard. 2. Turn on the PC and install the drivers software of peripheral devices 3. Right click the computer, select on manage, click on device manager and see the peripheral devices are mention or not 4. Are the peripheral devices are detected and performed? (Table 20) In the above table  If all steps get “YES”, peripheral devices work properly.  If of one of the step get “NO”, test again and make sure peripheral devices cables properly plugged and its drivers are installed. Then also it are not worked, the peripheral devices damaged and replace new peripheral devices which are damaged.

46 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Task 4.1 Computers are performing many roles in different departments because of software and hardware. Hardware and software needs to maintain in order to work properly. Hardware and software are working together to make functions of computer. If one of these gets fails, the computer will not work at any time and it may face many failure issues. So, hardware and software maintenance is important to increase the performance of computer as well as to avoid failures. I recommend performing hardware and software maintenance every 2 months if the computer use every day. If the hardware and software maintenance is not followed, the computer will face a risk of that will break down a card or any other components of PC. The processing speed will be slow. Mainly it will get problem on the internet because internet is a place where any kind of virus can infect to the computer if the antivirus software is not maintained. If the hardware and software maintenance followed, it can detect failures, it will increase the life time of components of computer, it will reduce repairs of computer and will increase overall performances of computer.

Following are needed to perform in order to do software maintenance for computer.  Disk defragmenter  Disk cleanup  Disk check  Cleaning the registry  Backup  Antivirus software checkups Disk defragmenter Disk Fragmentation will make hard disk to work efficiently and it will increase the speed of computer. The main job of disk defragmenter is rearranging fragmented data for given hard drive or USB flash drive. By doing disk fragmentation, hard disks and drives will work more efficiently than current status. You also can set schedule to do disk defragmentation as well as can do manually. 47 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Advantages of Disk defragmenter 

Computer

programs

will

run

faster

and more

efficiently when

the

disk

defragmentation followed. 

Disk defragmenter will make your unarranged files as arranged files. So, the components of drive no need to travel in a long distance to check or find data.



When antivirus scans your hard drive, it will take less time because the hard drive has fragmented by Disk defragmenter.



This protects the hard drive from overworking itself because the files are sorted so the hard drive doesn’t need to work as more hard to read necessary files.

Guideline to do Disk defragmenter Option 1 Select “Start” menu on “System tools”

Double click on “All Programs” Click on “Disk Defragmenter”

Click on “Defragment disk”

want to check

Click on “Accessories”

Click

Select your hard drive which you

When defragmentation is finished click on

“Close” Option 2 Select “Start” menu check

Click on “Computer”

Click on “Properties”

Right click you hard drive which you want to

Click on “Tools” tab

Click on the “Defragment now”

When defragmentation is finished click on “Close” To automate defragmentation Select “Start” menu on “System tools” “frequency”

Double click on “All Programs” Click on “Disk Defragmenter”

Set “day”

Set “time”

Click on “Accessories”

Click

Click on “Configure schedule”

Select disk that you want to check

Set

Click on

“Ok” I recommend to do automate defragmentation which done automatically because it's easy to forget to do it manually and automate defragmentation can maintain forever.

48 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Disk cleanup The Disk Cleanup utility is a tool which removing temporary files and unnecessary files from your hard drive to free up disk space and it will help your computer to run fast. Following are check and clean by Disk cleanup: 

Temporary Internet Files: which allow web pages to load more quickly



Downloaded Program Files: It’s location for programs downloaded



Recycle Bin: Files that have been marked as deleted



Temporary Files: The files which are TEMP format



Web client/publisher temporary files.



Compress old files.



Catalog files for the content indexer.

Advantages of Disk cleanup 

Saving time because when we find and delete all files (Temporary files, downloaded program files, recycle bin and etc.) manually, It will take more time but Disk Cleanup does it in less time.



Increases the amount of free space on your hard drive by compressing files which have not used in your computer.



Increasing the reliability of your computer because Disk cleanup removing the unwanted programs, unwanted files and temporary files.

Guideline to do Disk cleanup Option 1 Select “Start” menu on “System tools” Click on “Ok”

Double click on “All Programs” Click on “Disk cleanup”

Click on “Accessories”

Click

Select drive that you want to cleanup

Then Disk cleanup will calculate the free space on your computer and after

the calculation is complete,you will be a see a dialog box,in that confirm that only the following check boxes are checked: downloaded program files, temporary internet files, recycle bin and temporary files

Click on “OK”

Finally, you will see a dialog box that

prompts you: Are you sure you want to permanently delete these files? Files”

Click on “Delete

Disk cleanup will delete the files and close automatically.

49 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Option 2 Select “Start” menu

Click on “Computer”

Click on “Properties”

check

Right click you hard drive which you want to

Click on “General” tab

Select drive that you want to cleanup

Click on the “Disk Cleanup

Click on “Ok”

Then Disk cleanup will

calculate the free space on your computer and after the calculation is complete, you will be a see a dialog box, in that confirm that only the following check boxes are checked: downloaded program files, temporary internet files, recycle bin and temporary files on “OK”

Click

Finally, you will see a dialog box that prompts you: Are you sure you want to

permanently delete these files?

Click on “Delete Files”

Disk cleanup will delete the

files and close automatically. Disk check Disk check will remove the system errors, bad sectors from your hard drive to free up disk space and it will help your computer to run fast. Advantages of Disk check 

Disk check will remove the errors files from your hard drive.



Increasing the free amount of hard drive because it’s removing errors.



The computer failures will be less.

Guideline to do Disk check Select “Start” menu check

Click on “Computer”

Click on “Properties”

Error-checking both options

Right click you hard drive which you want to

Click on “Tools” tab

Click on the “Check now” under

You will be getting a window which saying disk check options Click on “Start” button

Select

When the scan is complete you will be getting a

results (This process will happen if the selected hard disk is not in use)

Click on “Ok”

If the selected hard disk is in use following will be changes After clicking “Start” button computer

Then click on the Schedule disk check

Restart your

At the first (before loading splash screen), you will be getting page which

checking your hard drive

When the scan is complete you will see a report

Computer

welcome page will be load.

50 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Cleaning the registry When you install application software, it will be automatically registered in the computer. If the application software was uninstalled it doesn’t mean that completely removed because the registry remains on the computer and it should be always maintain the existences of application software whatever you installed. I recommend using Your Uninstaller 2010 because it will remove the existence application from registry in less time. Advantages of cleaning the registry 

Registry files can be cleaned manually



Saver Removal Of Malicious And Old Registry Entries



Registry cleaners also have a schedule. So, you do not need to think about registry maintenance.



Increase the efficiency of the computer by cleaning the unwanted files from the registry

Backup Backup is storing copies of your files on your hard disk. The reason of making backups is to protect against the files. Advantages of Backup 

Can protect data of hard drives for a long time.



It enhances the security of data.

Guideline to do backup (Relevant guidelines are recorded and it’s been provided in the CD. The name of the folder is “Task 4.1”) Antivirus software checkups Antivirus software is used to safeguard a computer from spyware, malware, including viruses that coming from internet, computer worms, and Trojans.

51 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Advantages of antivirus software 

Protection from Viruses



Maintain the computer's Security



Protect Data and Files



Protect Against Email Threats/Spam



Protect from spyware and malware

Guideline to do antivirus software (Relevant guidelines are recorded and it’s been provided in the CD. The name of the folder is “Task 4.1”)

Following are needed to perform in order to do hardware maintenance for computer 

Firewall



Backup



Reduce heat



Clean dust



Check electricity



Maintain computer hardware or maintain components of computer

Firewall Firewall is software which checks data and information that coming from the internet. Mainly it will stop hackers and malicious software from getting access and damages to your computer. It’s containing of software firewalls and hardware firewalls. Advantages of firewall 

If the firewall is working, your antivirus will work effectively.



Firewall will help your computer from outside hacker attacks.



Increase the speed because the hardware firewalls are worked for faster response times and it handle more traffic loads than currents status of your computer,



Hardware firewalls will enhance the security controls of your computer.

52 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Guideline to do Firewall (Relevant guidelines are recorded and it’s been provided in the CD. The name of the folder is “Task 4.1”) Backup Backup is storing copies of your files on your hard disk. The reason of making backups is to protect against the files. Advantages of Backup 

Can protect data of hard drives for a long time.



It enhances the security of data.

Guideline to do backup (Relevant guidelines are recorded and it’s been provided in the CD. The name of the folder is “Task 4.1”) Reduce heat Heat is a most important thing when using computer. Overheating will be interrupt the functions of processor and hard disk which are most important component of a computer system and without these components computer will not work. To avoid overheating, keep the computer in a well-ventilated area and operate it or open the case of the CPU. So maintain this strategy whenever using the computer in BCAS in order to reduce heat. Clean dust Dust is normally around everywhere especially in every lecture hall and labs in BCAS because BCAS located near the roads. So, dusts will accumulate inside the system of computers and it will not make PC to run smoothly. To overcome this, the system unit of computer in BCAS should be cleaned at least once a month. Simply by using as smooth brush can clean dust. Avoid using water because it will create a short circuit to the components of computer. By maintain this method, computer hardware components will not damage.

53 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Check electricity Electricity is main power of a computer which giving electric to all components of computer. To run computers efficiently, maintain the voltage of electricity is important especially in BCAS because BCAS having large numbers of computer. While using computer, if the electricity is fluctuating it will damage the hard disk and the Power Supply. If electricity fluctuation is happening continuously, just turn off the computers that have been using in BCAS and use the computers when the electricity runs normal. Maintain computer hardware or maintain components of computer To maintain components of computers following actions needed to perform in BCAS 

Clean the computer case with a blower once every week because the dust will accumulate inside the CPU and it can affect the performance of computer.



Buy a quality fan for your processor which will make more RPM (revolution per minute) and check type of the heat sink (Copper is recommended).



Fix more of fans in CPU because when the temperature of components increases it will affect the performance of hardware as well as computer speed.



Every month check power supply voltage because if the voltage is not correct it will affect the performance of computer.



Buy more memory cards to enhance the speed of computer.



Buy new graphic card to get better display if the old is not good.



Upgrade components of computer whenever it’s not work.



Follow standard test criteria to check components of computer. If the components are not work, replace it.

(Advantages of Disk Cleanup, NA) (How To Perform Software Maintenance?, NA) (Defragment Your Windows 7 Computer, NA) (Delete files using Disk Cleanup, NA)

54 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Task 4.2 System design specifications for game development and mobile application

Specifications

Requirements

Brand

Dell Inspiron 560

Reason Dell Inspiron 560 has been rated as 1st rank in 2012 best multimedia computers. Currently Intel is leading company and i7-2600 processor has some new graphics specification

Processor

Intel Core i7-2600

such as Intel® InTru3D Technology, Intel Quick

(8M Cache, Speed -

Sync Video, Dual Display Capable, Intel Flexible

3.10 GHz)

Display Interface (Intel FDI) and Intel Clear Video HD

Technology

which

are

helpful

to

do

multimedia works. Following advance technologies has been supported  Intel®Turbo Boost Technology  Intel vPro Technology  Intel Hyper-Threading Technology  Intel Virtualization Technology (VT-x)  Intel Virtualization Technology for Directed I/O (VT-d)  Intel Trusted Execution Technology  AES New Instructions  Intel 64  Idle States  Enhanced Intel SpeedStep Technology  Thermal Monitoring Technologies  Intel Fast Memory Access  Intel Flex Memory Access  Execute Disable Bit  Intel VT-x with Extended Page Tables(EPT)

55 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

RAM

DDR3 (8GB)

DDR3 (8 GB) will offer best performance and it will take less loading time for multimedia software which are latest and currently using

AMD Radeo HD 6450 is specially designed for multimedia purpose and it offer DirectX® 11, Video card

AMD Radeon HD

occlusion culling, HD3D technology and multi-

6450(VRAM- 1GB)

display technology which help to create ultimate multi-monitor desktop workstation.

Power supply

Powerlogic(500Watts)

unit

When using new multimedia technologies, it will require 500 watts and high video cards also require the same.

Currently Seagate is a famous for SDD and Hard Disk

Seagate SDD (1 TB)

Drive

Multimedia department requires lot of space. SDD is a latest hard drive which using in famous multimedia companies.

Operating

Windows 7 home

system

premium(64 bit)

Windows 7 is the latest operating and it will support all multimedia software.

(Table 21) (Intel® Core™ i7-2600 Processor (8M Cache, up to 3.80 GHz), NA) Following software are currently mostly used for game development 

Unity3d



Unreal Development Kit

Unity 3d Unity3d is game development software. It has a WYSIWYG tools and it’s very easy to add and change things.

56 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Unity3d has objected oriented programming languages which including JavaScript, C#, and Boo. It provides guild line to create games. Another unique feature is, it will allow playing game immediately in the editor when the game design has been created. Mainly it helps to create a fast-forward the game in the editor. Unity3d also has easy publishing. All you need to do is just “Build” and when builds the complete game, it will ready for people to download and play. Whenever new features are releasing, Unity3d has upgrades to provide new features. Following are system requirements of Unity3d  Windows: XP SP2 or later; Mac OS X: Intel CPU & "Leopard" 10.5 or later. Note that Unity was not tested on server versions of Windows and OS X  Graphics card with DirectX 9 level (shader model 2.0) capabilities. Any card made since 2004 should work.  Using Occlusion Culling requires GPU with Occlusion Query support (some Intel GPUs do not support that). System Requirements for Unity Android Authoring  Windows XP SP2 or later; Mac OS 10.5.8 or later  Android SDK and Java Development Kit (JDK)  Android authored content requires devices equipped with:  Android OS 2.0 or later  Device powered by an ARMv7 (Cortex family) CPU  GPU support for OpenGLES 2.0 is recommended  System Requirements for Unity-Authored Content  Windows XP or later; Mac OS X 10.5 or later.  Pretty much any 3D graphics card, depending on complexity.  Online games run on all browsers, including IE, Firefox, Safari, and Chrome, among others

(System Requirements, NA) (UnityHardwareRequirements, NA)

57 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Justification

Specifications

Processor

System design

Unity3d Software

Justify( )Or

specification requirements

requirements

Not×)

Intel Core i7-2600

(Intel CPU 1.66 GHz)



2GB recommended



(Speed - 3.10 GHz)

RAM

DDR3 (8GB)

(Else to do render process and to do several works at one time)

Video card

AMD Radeon HD 6450,

GPU with Occlusion

DirectX11(VRAM- 1GB)

Query support

(2.1 GPU)

(shader model



2.0)(DirectX 9)  Hard Disk Drive

Seagate SDD(1 TB)

Hard Drive: 16GB

(Else space to keep multimedia game development files for a long time)

Operating

Windows 7 home

system

premium(64 bit)

XP SP2 or later



(Table 22) Unreal Development Kit UDK is a strong and professional game engine tool which is free. It is having a full-fledged tool and it allows creating professional games. It has some features such as art rendering and animation integration. It includes Unreal Kismet, which is providing visual programming editor. UDK has built in networking, artificial intelligence and destructible environments.

58 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Following are system requirements of Unreal Development Kit 

Processor: 2.0+ GHz processor



RAM: 2 GB system RAM



Hard Drive Space: 3 GB free hard drive space



Operating System: Windows XP SP2, Windows Vista or Windows Vista 64 SP2 or later

Recommended System Requirements 

Processor: 2.0+ GHz multi-core processor



RAM: 8 GB System RAM



Video Memory: NVIDIA 8000 series or higher graphics card

(System Requirements, NA) Justification

Specifications

Processor

RAM

System design

UDK Software

specification requirements

requirements

Intel Core i7-2600

(2.0+ GHz multi-core

(Speed - 3.10 GHz)

processor or 2.0Ghz)

DDR3 (8GB)

Justify( )Or Not×)





8GB recommended or

(Else to do render

2GB

process and to do several works at one time)

Video card

AMD Radeon HD 6450,

NVIDIA 8000

DirectX11(VRAM- 1GB)

series or higher

(2.1 GPU)

graphics card



 Hard Disk Drive

Seagate SDD(1 TB)

Hard Drive: 3GB

(Else space to keep multimedia game development files)

59 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Operating

Windows 7 home

Windows XP SP2,

system

premium(64 bit)

Windows Vista or



Windows Vista 64 SP2 or later (Table 23) Following software is currently most used for mobile application development 

Adobe Dreamweaver cs6

Adobe Dreamweaver cs6 Adobe Dreamweaver is a Web development tool. It includes a code editor, a visual design mode, sophisticated Cascading Style Sheet tools for creating and editing. In Dreamweaver CS6, Adobe has a tool to build mobile-ready websites, Phone Gap build and a cloud-based service for mobile platforms. Following are system requirements of Adobe Dreamweaver cs6  Intel Pentium 4 or AMD Athlon 64 processor  Windows XP SP2 (SP3 recommended); Windows Vista Home Premium, Business, Ultimate, or Enterprise (SP1); Windows 7  512MB RAM  1GB available hard drive space for installation - and it can't be installed on removable flash-based storage  1280x800 display with 16-bit video card  DVD-ROM drive  QuickTime 7.6.6 software required for HTML5 media playback  Internet connection required for online services and the software will not work without activation (Windows System Requirements for Dreamweaver CS6, NA)

60 S. Sutharshan (BCAS, Batch IT-41)

Computer systems Justification

Specifications

System design

Adobe Dreamweaver

specification requirements

cs6 Software

Justify( )Or Not×)

requirements

Processor

Intel Core i7-2600

(Intel Pentium 4 or

(Speed - 3.10 GHz)

AMD Athlon 64



processor )

RAM

DDR3 (8GB)



512mb RAM

(Else to do render process and to do several works at one time)

Video card

AMD Radeon HD 6450,

1280x800 display

DirectX11(VRAM- 1GB)

with 16-bit video

(2.1 GPU)

card



 Hard Disk Drive

Seagate SDD(1 TB)

Hard Drive: 1GB

(Else space to keep multimedia mobile development files)

Operating

Windows 7 home

Windows XP SP2 (SP3

system

premium(64 bit)

recommended); Windows Vista Home



Premium, Business, Ultimate, or Enterprise (SP1); Windows 7

(Table 24)

61 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Conclusion These are the system specifications for multimedia department which includes Dell Inspiron 560, Intel Core i7-2600, DDR3 (8GB), AMD Radeon HD 6450(VRAM- 1GB), Powerlogic (500Watts), Seagate SDD (1 TB) and Windows 7 home premium (64 bit). These specifications are based on new technologies that have been used in games development and mobile application development. To support system design specifications I have chosen Unity3d and Unreal Development Kit software which are mostly used in game development site and technology. System requirements of the chosen software have been matched with the system design specification that I have mentioned. This has been justified and the result has been analyzed to its need. To support system design specifications, Adobe Dreamweaver cs6 has been chosen in mobile application development. System requirements of Adobe Dreamweaver cs6 have been match with the system design specification that I have mentioned and proved by justification. By adopting to the system design specifications, BCAS would overcome its current problems with computer systems. At the same time BCAS should be capable of purchasing computers with mentioned system design specifications. So by implementing this process BCAS can provide game development and mobile application development courses with new technologies than its competitors

62 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

Conclusion BCAS has planned to open up three departments to proceed with its functions. To carry on with the function, computer systems will be used. Multimedia department can precede these functions, web design, computer gaming and advertising by using proper software in computer systems. The other two departments include, Budgeting, General ledger, Billing, Cost accounting , Profit planning, letters, company's income and expenditure, Payments transactions and network functions. Further each function has been explained in detail. BCAS is using its computer systems to do functions by maintaining hardware, software and peripheral components. Under these, all the components and the software has been identified and explained. In the IT environment currently these computers have been used, that are Micro Computers, Mini Computers, Mainframe Computers and Super Computers. Comparison has been made by cost, capacity, workplace and the purposes of each computer too have been compared. Three system design specifications have been mentioned for the three departments of BCAS. These has been justified and explained. Advise is been given to use the specifications to benefit the operation works of BCAS. BCAS can configure its own computer systems and can implement securities by the help of the guide lines which includes assembling pc, installing OS, installing drivers, installing antivirus and security implementation ways. Ways of testing the components of pc, hardware and software has been mentioned. By following these mentioned test criteria, BCAS can overcome the problems of trouble shooting and faults could be detected. These are the hardware maintenance, firewall, backup, reduce heat, clean dust and check electricity. Software maintenances are disk defragmenter, disk cleanup, disk check, cleaning the registry, backup and antivirus software checkups. These should be maintained monthly so that the current problems of computer system will be solved.

63 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

References list  Johnson, Joshua ( 2011), 10 Rock Solid Website Layout Examples (Online), NA, Available at:[16th Aug 2102]  Bennett, Jonathan (2010), 5 Free Game Development Software Tools To Make Your Own Games (Online), NA, Available at: [16th Aug 2102]  James, Reuben (NA), Types of Computers Used in the Government(Online), NA, Available at:[02th Aug 2102]  Learn Computer Network (2010), Why do we need computer networking? (Online), NA, Available at: [12th Aug 2012)]  ehow tech (NA), 4 Main Parts of a Computer System (Online), NA, Available at:[12th Aug 2012]  ITSAVVY.IN (NA), Types of Computer(Online), NA, Available at: [17th Aug 2012]  MBA Knowledge Base (NA), Major Types of Computer Systems (Online), NA, Available at: [17th Aug 2012]  Intel (NA), Intel® Core™ i3-2100 Processor (3M Cache, 3.10 GHz) (Online), NA, Available at: [18th Aug 2012]  Intel (NA), Intel® Core™2 Quad Processor Q6600 (8M Cache, 2.40 GHz, 1066 MHz FSB) (Online), NA, Available at: [19th Aug 2012]

64 S. Sutharshan (BCAS, Batch IT-41)

Computer systems  Intel(NA), Intel® Pentium® 4 Processor supporting HT Technology 3.00 GHz, 1M Cache, 800 MHz FSB (Online), NA, Available at: [19th Aug 2012]  Bookwalter, J.R(20100, The Works: What’s Included in Adobe CS5 Master Collection (Online), NA, Available at:[19th Aug 2012]  Bhphotovideo (NA), Adobe Creative Suite 5.5 Master Collection Software for Windows (Upgrade from CS5 Master Collection) (Online), NA, Available at:[19th Aug 2012]  QuickBooks (NA),QuickBooks Pro 2010 Small Business Accounting Software(Online), NA, Available at: [19th Aug 2012]  Intuit QuickBooks Support (NA), QuickBooks Pro or Premier hardware and operating system requirements (client and server) (Online), NA, Available at: [19th Aug 2012]  Equation (NA), Sage ERP Accpac Compatibility Guide,Recommended Hardware Specifications (Online), NA, Available at: [19th Aug 2012]  Office.Microsoft (NA), What's new in Office 2010? (Online), NA, Available at: [ 20th Aug 2012]  Office. Microsoft(NA), Microsoft Office 2010 system requirements (Online), NA, Available at:[20th Aug 2012]  Jason Artman (NA), Advantages of Disk Cleanup (Online), NA, Available at: [28th Sep 2012] 65 S. Sutharshan (BCAS, Batch IT-41)

Computer systems

 Tips4pc (NA), How To Perform Software Maintenance? (Online), NA, Available at: [28th Sep 2012]  Wikihow (NA), Category:Hardware Maintenance and Repair (Online), NA, Available at: [28th Sep 2012]  Keith Ward (NA), Defragment Your Windows 7 Computer (Online), NA, Available at: [28th Sep 2012]  Microsoft (NA), Delete files using Disk Cleanup (Online), NA, Available at: [28th Sep 2012

 Jennifer Kyrnin (NA), Adobe Dreamweaver CS6 System Requirements (Online), NA, Available at: [ 29th Sep 2012]  Intel (NA), Intel® Core™ i7-2600 Processor (8M Cache, up to 3.80 GHz) (Online), NA, Available at: [29th Sep 2012]  Ubuntu (NA), Unity Hardware Requirements (Online), NA, Available at: [29th Sep 2012]  Unity3d (NA), System Requirements (Online), NA, Available at: [29th Sep 2012]  Unreal Development Kit (2009), System Requirements (Online), NA, Available at: [29th Sep 2012]

66 S. Sutharshan (BCAS, Batch IT-41)