What is a light pen?
Mechanical Input device
Optical input device
Electronic input device
Optical output device
Correct Answer :
B. Optical input device
Related Questions
To move a copy of file from one computer to another over a communication channel is called?
File transfer
File encryption
File modification
File copying
Which of the following are the functions of a operating system
Allocates resources
Monitors Activities
Manages disks and files
All of the above
Which of the following term means to reckon?
putare
com
computa
computar
The proper definition of a modern digital computer is
An electronic automated machine that can solve problems involving words and numbers
A more sophistic and modified electronic pocket calculator
Any machine that can perform mathematical operations
A machine that works on binary code
Snowbol is an/a________
Operating system
HLL
Software
Search engine
In a computer_____ is capable to store single binary bit.
Capacitor
Flip flop
Register
Inductor
Which American computer company is called Big Blue?
Microsoft
Compaq Corp
IBM
Tandy Svenson
When was vacuum tube invented?
1900
1906
1910
1880
Which of the following is true?
Fields are composed of bytes
Records are composed of fields
Fields are composed of characters
All of above
A disadvantage of the laser printer is
It is quieter than an impact printer
It is very slow
The output is of a lower quality
None of the above
Raw facts and figures about any particular topic are
Information
facts
data
none of above
Magnetic disk is an example of
Secondary memory
Primary memory
Main memory
Both (1) and (2)
Who invented vacuum tubes?
John Bardeen
William Shockley
Lee de Forest
All of above
ASCII stands for
American Stable Code for International Interchange
American Standard Case for Institutional Interchange
American Standard Code for Information Interchange
American Standard Code for Interchange Information
A self replicating program, similar to a virus which was taken from a 1970s science fiction novel by John Bruner entitled the Shockwave Rider is
Bug
Vice
Lice
Worm
What is the main difference between a mainframe and a super computer?
Super computer is much larger than mainframe computers
Super computers are much smaller than mainframe computers
Supercomputers are focused to execute few programs as fast as possible while mainframe uses its power to execute as many
Supercomputers are focused to execute as many programs as possible while mainframe uses its power to execute few programs as fast as possible.
Which of the following programming language started from second generation?
Cobol
BASIC
C
LISP
A directly accessible appointment calendar is feature of a __ resident package
CPU
Memory
Buffer
ALU
Which computers used operating systems by Microsoft?
IBM PCs
Apple/Macintosh PCs
IBM Compatibles
Both A & C
The terminal device that functions as a cash register, computer terminal, and OCR reader is the:
Data collection terminal
OCR register terminal
Video Display terminal
POS terminal
Which of the following helps to protect floppy disks from data getting accidentally erased?
Access notch
Write-protect notch
Entry notch
Input notch
Computers with 80286 microprocessor is
XT computer
AT comptuers
PS/2 computer
None of above
While inserting a diskette into the diskette drive of a PC, the diskette's label side should face
East
North
South
Up
The output quality of a printer is measured by
Dots per inch
Dot per sq. inch
Dots printed per unit time
All of above
What was the nick name of the computer used by the Americans in 1952 for their H-bomb project?
ENIAC
EDSAC
MANIAC
UNIVAC
ALU is
Arithmetic Logic Unit
Array Logic Unit
Application Logic Unit
None of above
EEPROM stands for
Electrically Erasable Programmable Read Only Memory
Easily Erasable Programmable Read Only Memory
Electronic Erasable Programmable Read Only Memory
None of the above
Collecting personal information and effectively posing as another individual is known as the crime of:
Spooling.
Identity theft.
Spoofing.
Hacking.
To produce high quality graphics (hardcopy) in color, you would want to use a/n
RGB monitor
Plotter
Ink-jet printer
Laser printer
Which statement is valid about interpreter?
It translates one instruction at a time
Object code is saved for future use
Repeated interpretation is not necessary
All of above