Computer

Computer Input-Output devices By

Khan Alisha Javeed

Content

What is computer system?Major parts of computerTypes of computerApplication of computer

Computer system

Computer system – it is a programmable machine that receives input , stores and manipulate data and provide output in a useful format.

Parts of Computer Input devices

Keyboard Mouse Scanner Web-Camera Joysticks

Output devices Monitor Projector Printer Speaker Headphones

Mouse

Web-Camera

Scanner

Monitor

Projector

Printer

Central Processing UnitThe main unit inside the computer is the CPU.This unit is responsible for all events inside the computer . It controls all internal and external devices , performs arithmetic and logic operation .The CPU is the device that interprets and executes instruction.

Types of computer o Super ComputeroMainframe ComputeroMini Computer oMicro Computer

• Desktop Computer• Laptop Computer

Mainframe Computer

Mainframe Computer is a very large and expensive computer capable of supporting hundreds , or even thousands , of users simultaneously .

Super Computer

The fastest type of computer ; super computers are very expensive and are employed for specialized applications that require immense amounts of mathematical calculations.

Mini ComputerMini computer is a midsized computer . In size and Power , minicomputers lie between workstations and mainframes. In general minicomputer is a multiprocessing system capable of supporting from 4 to about 200 users simultaneously.

Desktop Computer

Desktop computer :is a personal or micro-mini computer sufficient to fit on a desk.

Laptop Computer

Laptop computer is a portable computer complete with an integrated screen and keyboard . It is generally smaller in size than a desktop computer and larger than a notebook computer.

Palmtop Computer

Palmtop computer is a hand-sized computer , palmtops have no keyboard but the screen serves both as an input and output devices.

Application Of Computer Desktop publishing –with desktop publishing , you can create page layouts for entire books on your personal computer. Computers in medicine - you can diagnose diseases. you can learn the cure. Banks –All financial transactions are done by computer software. They provide security ,speed and convenience. Travel –One can book air tickets or railway ticket and make hotel reservations online .

Examination – You can give online exams and get instant results. You can check your examination results online .

News – There are many websites through which you can read the latest or old news.

Robotics – Robots are controlled by software .

Airplanes – Pilots train on software , which simulates flying.

Sports – Software is used for making umpiring decisions .

Weather analysis – Supercomputers are used to analyze and predict weather.

E-Learning – Instead of a book it is easier to learn from an E-learning software .

Thank You…..