Computer Fundamentals

What is Computer?

A Computer is an electronic device, which accepts data as input, Processes that input data and produces result data as output.

Give some examples of Input Devices?

Keyboard, Mouse, Joystick, Touch Screen, Track Ball

Give Some examples of Output Devices?

Monitor, Printer, Plotter

What are the components of a computer?

There are 2 Components in a computer, Hardware and Software.

What is Hardware?

Any physical part of a computer touched by human being is Hardware.

What is Software?

Software is a collection of programs which on execution provides desired functionality.

What is Operating system?

Operating System is an interface between Computer Hardware, User and Application Software. 

Give examples of Operating Systems?

Windows, Unix/ Linux, Solaris

ABBREVIATIONS

CPU - Central Processing Unit

ALU - Arithmetic and Logic Unit

CU - Control Unit

MU - Memory Unit

RAM - Random Access Memory

ROM - Read Only Memory

CD-ROM - Compact Disk Read Only Memory

DVD-ROM - Digital Video Disk Read Only Memory

PROM - Programmable ROM

EPROM - Erasable Programmable ROM

EEPROM - Electrically Erasable Programmable ROM

UVPROM - Ultra Violet Read Only Memory

LCD - Liquid Crystal Display

LED - Light Emitting Diode

SIM - Subscribers Identity Module