Basic Computer Science Notes.

VDU stands for	Visual Display Unit
One kilobyte is approximately	1000 bytes
DOS stands for	Disk Operating System
WORD STAR is a popular	Word processing programme
WORD STAR was developed by	Micro pro Company
PC stands for	Personal Computer
ALU stands for	Arithmetic Logic Unit
The VDU and Keyboard together form a	TERMINAL
The speed of the dot matrix printers is measured by CPS which stands for	characters per second
The speed of the line printers is measured by LPM which stands for	Lines per second
DBMS stands for	Database Management System
IBM is a famous computer company.IBM stands for	International Business Machines Corporation
ROM stands for	Read Only Memory
The actual machine of the computer is commonly known as	Hardware
The programs run on the computer are commonly known as	Software
All the output which is printed on paper is called	Hard Copy
The number of pixels on a computer screen determines a screes’s	Resolution
A processor’s speed is measured in	Megahertz
A software that assists the computer in performing instructions,is called as	system software
CAM stands for	Computer Aided Manufacturing
DPI stands for	Dots per Inch
DTP stands for	Desk Top Publishing
EPROM stands for	erasable and Programmable Read only Memory
A magnetic storage disk made out of a thin piece of plastic is called	Floppy Disk
A pictorial representation of the step by step sequence for solving a problem is known as a	Flow Chart
A measure of storage capacity equal to one thousand megabytes is one	Gigabyte
A variable whose value is accessible throughout the program is called	Global Variable
A huge,worldwide network of computers that communicate with each other,allowing global communications between users is known popularly known as	Internet
KB stands for	Kilobyte
LAN stands for	Local Area Network
A printer which uses light to transfer the image to paper is the	Laser Printer
Memory which retains all its contents even after the power is turned off is known as	Non-Volatile Memory
The result that is generated by the computer after processing the information provided to it is known as	Output
Electronic mail is more popularly known as	E-Mail
PILOT stands for	Programmed Inquiry Learning Or Teaching
PILOT was developed by	Doug Engelbardt
IQL stands for	Interactive Query Language
LOGO was developed by	Dr.seymour Papert
CAL stands for	Computer Assisted Learning
APT stands for	Automatically Programmed Tooling
`C’language was invented by	Dennis M.Ritchie
Modula-2 was developed by	Niklaus Wirth
Terminals that have their own memory are called	Smart terminals
The memory that needs electric power to sustain its contents is known as	Volatile Memory
MOS stands for	Metallic Oxide Semiconductors
Dvorak key board was designed by	August Dvorak
A simple device which functions as a simpler alternative to the keyboard is the	Mouse
Automatic drawing input device is called	Scanner
In the second generation computers,magnetic cores were used as	Main Memory Devices
LCD stands for	Liquid Crystal Display
RADAR stands for	Radio Detection and Ranging
RADAR works on the principle of	Echo
software-in-Hardware modules are called	Firmware
A device by which any microcomputer can use ordinary television set for producing output is called	RF modulator
EDSAC stands for	Electronic Delayed Storage Automatic Computer
EDVAC stands for	Electronic Discrete Variable Automatic Computer
EDSAC was developed in the year	1949
EDVAC was developed in the year	1952
ENIAC stands for	Electronic Numerical Integrator and Calculator
The most successful computing device in the ancient time was	Abacus
Use of some mechanism for the operation of a machine is known as	Automation
Radar contact with the moon was first made in	1945
Radar contact with Venus was first made in	1961
A system in which information is displayed on a television screen is known as	Video Text System
A modern means of communication in which the information is stored in a computer at a TV station is known as	Teletext
Global communication became possible by using	Satellites
Morse code was invented by	Samuel Morse
The code used in a teleprinter is the	Baudot Code
Teleprinter exchange is popularly known as	Telex
A device which converts sound waves into electrical waves is called	Microphone
AVC stands for	Automatic Volume Control
The device used to measure wavelengths of radio waves is	Wavemeter
A hollow metallic tube used in place of wire in electric circuits carrying high frequency currents is called	Waveguide
An instrument used to measure the intensity of radiations is the	Radiometer
An instrument used to measure electrical voltage is the	Voltmeter
VTVM stands for	Vacuum Tube Volt Meter
A circuit which maintains a constant voltage is called	Voltage Stabilizer
SCR stands for	Silicon Controlled Rectifier
A device used to increase or decrease electric voltageis called a	Transformer
A magnetic tape that records both audio and video signals is called a	Video Tape
The first electronic calculator was manufactured in 1963 by	Bell Punch Company,USA
MASER stands for	Microwave Amplification by stimulated Emission of Radiation
A computer which can handle a large volume of numbers is called a	Number cruncher
POST stands for	Power on Self Test
POST is a test carried out just after the computer has been	Switched on
An index of the files stored on a disk is called	Directory
CP/M stands for	Control program for Microcomputers
CP/M was developed by	digital Research Inc.,USA
MVS stands for	Multiple Virtual Storage Operating System
MVS is used in	Mainframe computers
The process of starting a computer is called	Booting
A group of four binary digits is called a	NIBBLE
BPI stands for	Bit per Inch
A smart card is a	multifunctional microprocessor
LIPS stands for	Logical Inferences Per Second
A computerized machine is normally called a	Robot
A robot is a machine directed by a	Computer
A robot which resembles a human being is called an	Android
PL/1 stands for	Programme Language-1
The language PL/1 has combined features of	COBOL and FORTRAN
BASIC stands for	Begineers All Purpose Symbolic Instruction Code
COBOL stands for	Common Busines Oriented Language
ALGOL stands for	Algorithmic Language
ALGOL was developed in the early 1960s in	Europe
COBOL was first introduced in the year	1961
FORTRAN stands for	Formula Translation
FORTRAN was developed and introduced by IBM in the year	1957
PL/1 was introduced in the 1960s by	IBM
COMAL stands for	Common Algorithmic Language
BASIC was developed by	John Kemeny and Thomas Kurtz
SNOBOL stands for	String Oriented Symbolic Language
SNOBOL was developed in	1962
LISP stands for	List Processing Language
LISP was developed by	John McCarthy
Loud speaker was invented by	Rice Kellogg
PROM stands for	Programmable Read Only Memory
Two types of RAM chips are	Dynamic,static
Data is fed into the computer by first converting it into	Binary codes