COMPUTER SYSTEM

WHAT IS COMPUTER??

Electronic device used to process data

Can convert data into information

WHAT IS SYSTEM?? Set of interrelated component

Working together to achieve a common set of objectives

The Computer System

The computer come in many varieties, from the tiny

computer built into household appliances, to the

astounding supercomputer that have helped

scientists map the human genome. But no matter

how big it is or how it is use every computer is part

of system.

A complete computer system consists of 4 parts such

as

- Hardware

- Software

- Data

- User

HARDWARE

Hardware is physical devices that

make up a computer / computer

system

Input Device

• Device use to information and commands to comp

• Ex: mouse, keyboard, keypaid

Telecomunication Device

Connecting device

Output Device

• Device use to hear, see, or otherwise

• Ex: LCD, Printer, Speaker

Storage

Device

• Store the information to use at a latter time

• Ex: CD, Pendrive, Hardisk

Processing

Categories

Of

Hardware

• Device use to process data the computer

1. RAM (random access memory)

2. CPU – (i). Control Unit, (ii) Arithmetic / Logic Unit

• Send information and to receive it f

rom another person or computer

in network

• Connect peripherals to computer

• Ex: cables, ports, expansion board

SOFTWARE

Set of instruction that make the computer perform

taks.

In another word software tell the computer what to

do.

Categories

of Software

System software

Operating system software

(control application & Manages hardware)

Utility software(additional function to

your OS)

Application Software

(solve specific problems / user problem)

DATA

Data consists of raw facts , which the computer can manipulated and process into information that is useful to people

Computerized data is digital , meaning that is has been reduced to digits, or numbers, The computer stores and reads all data as numbers

Although computers use data in digital form, they convert data into forms that people can understand , such as text , numerials , sound and image

USERS

People are the computer’s operatpors

, or user

Some types of computers can operate

without much intervention from people

, but personal computers are designed

specifically for use by people