Computer Fundamentals

Central processing unit is the brain of any computer system. It processes all the data and programs. It sends signals to control other parts of the computer, the same way our brain controls our body.

WAN is a computer network that spans a relatively large geographical area.

Universal Automatic Computer was the first general purpose electronic digital computer designed for commercial use.

Control Unit is the part of CPU that interprets program instructions and initiates control operations.

Interactive computer systems allow user to enter data or commands.

It is a general purpose programming language associated with artificial intelligence and computational linguistics.

1's complement is done by changing all the bits that are 1 to 0 and all the bits that are 0 to 1.

A plotter is a printer that interprets commands from a computer to make line drawings on a paper.

Rotational delay is the average time necessary for the correct sector of the disk to arrive at the read-write head.

Assembler is a computer program that converts assembly language to machine language.

Modulator is a device that is responsible for conversion of signals.

Optical mark recognition (OMR) captures human marked data from document forms such as documents or tests.

Computer program is a sequence of instructions that tells a computer what to do.

Mnemonic is a term, symbol or name that is used to specify a computing function.

Bar code is a group of light and dark marks that are put on the product so that computer can come to know about the price and other information about the product. It is read optically by a device called bar code reader.