Codes consisting of light and dark marks which may be optically read is known as
Mnemonics
Bar code
Decoder
All of the above
Correct Answer :
B. Bar code
Related Questions
The instructions that tell a computer how to carry out the processing tasks are referred to as computer________
programs
processors
input devices
memory modules
In _____ mode, the communication channel is used in both directions at the same time?
Full-duplex
Simplex
Half-duplex
None of the above
Which access method is used to access cassette tape?
Direct
Sequential
Both of the above
None of the above
What was the nick name of the computer used by the Americans in 1952 for their H-bomb project?
ENIAC
EDSAC
MANIAC
UNIVAC
________ computer is a medium sized computer
Micro
Mainframe
Super
Mini
A system is
an integration of different units so as to achieve an objective
input unit
input and output unit
input, output and storage units
Which of the following machine was not invented by Charles Babbage?
Tabulating Machine
Analytical Engine
Difference Engine
Both C and D
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 was a special purpose computer?
ABC
ENIAC
EDVAC
All of the above
What is the name of the display feature that highlights are of the screen which requires operator attention?
Pixel
Reverse video
Touch screen
Cursor
Which of the following is not processing?
arranging
manipulating
calculating
gathering
A term used to describe interconnected computer configuration is
Multiprogramming
Modulation
Multiprocessing
Micro program sequence
All of the following are examples of storage devices EXCEPT:
hard disk drives
printers
floppy disk drives
CD drives
A set of information that defines the status of resources allocated to a process is
Process control
ALU
Register Unit
Process description
Which of the following professions has not been affected by personal computers?
Medical
Clerical and law
Accounting
None of the above
Which printer is very commonly used for desktop publishing?
Laser printer
Inkjet printer
Daisywheel printer
Dot matrix printer
Before a disk drive can access any sector record, a computer program has to provide the records disk address. What information does this address specify?
Track number
All of above
Sector number
Surface number
The programs which are as permanent as hardware and stored in ROM is known as
Hardware
Software
Firmware
ROM ware
Which of the following is a way to access secondary memory?
Random access memory
Action method
Transfer method
Density method
When we look at the cost, which of the following computer is most expensive?
Mainframe Computer
Mini Computers
Micro Computers
Super Computers
The first electronic computer was developed by
J.V. Attansoff
Bill Gates
Simur Cray
Winton Serf
What is meant by a dedicated computer?
Which is used by one person only
Which is assigned one and only one task
Which uses one kind of software
Which is meant for application software
Which of the following is not anti-viruses software?
NAV
F-Prot
Oracle
McAfee
EBCDIC stands for
Extended Binary Coded Decimal Interchange Code
Extended Bit Code Decimal Interchange Code
Extended Bit Case Decimal Interchange Code
Extended Binary Case Decimal Interchange Code
A fault in a computer program which prevents it from working correctly is known as
Boot
Bug
Biff
Strap
Digital devices are
Digital Clock
Automobile speed meter
Clock with a dial and two hands
All of them
A physical connection between the microprocessor memory and other parts of the microcomputer is known as
Path
Address bus
Route
All of the above
Coded entries which are used to gain access to a computer system are called
Entry codes
Passwords
Security commands
Code words
What are the three decisions making operations performed by the ALU of a computer?
Grater than
Less than
Equal to
All of the above
A hybrid computer uses a _____ to convert digital signals from a computer into analog signals.
Modulator
Demodulator
Modem
Decoder