What was the main disadvantage of vacuum tubes?
They were larger in size
They consumed a lot of electricity
They produced heat and often burned out
The operation cost was high
Correct Answer :
C. They produced heat and often burned out
Related Questions
What kind of memory is both static and non -volatile?
RAM
ROM
BIOS
CACHE
A fault in a computer program which prevents it from working correctly is known as
Boot
Bug
Biff
Strap
Which of the following is not input unit device?
scanner
camera
plotter
digitizer
Bit map terminal
support display containing multiple windows
require considerable amount of video RAM
requires tremendous amount of copying and hence low performance
all of above
________ Store data or information temporarily and pass it on as directed by the control unit
Address
Register
Number
Memory
Symbolic logic was discovered by
George Boole
Herman Hollerith
Van Neumann
Basic Pascal
Which of the following programming language started from second generation?
LISP
C
QBASIC
FORTRAN
Napier's Bones were invented in
1614
1617
1620
None of above
CAD stands for
Computer aided design
Computer algorithm for design
Computer application in design
Computer analogue design
The report card and merit list forms the
Output data
Data processing
Central Processing
Input data
The earliest calculating devices are
Abacus
Clock
Difference Engine
None of these
________ Is the functional key to display Save-As box.
F5
F6
F9
F12
The 2's compliment of a binary no. is obtained by adding________to its 1's compliment.
0
1
10
12
From which generation computers the printers were used?
first
second
third
fourth
Who invented Integrated Circuits?
Jack Kilby
Robert Noyce
Both of above
None of above
Machine language is
Machine dependent
Difficult to program
Error prone
All of above
IBM 1401 is
First Generation Computer
Second Generation Computer
Third Generation Computer
Fourth Generation Computer
Office LANS, which are scattered geographically on large scale, can be connected by the use of corporate
CAN
LAN
DAN
WAN
How was the generation of computer classified?
By the device used in memory & processor
By the speed of computer
By the model of the computer
By the accuracy of computer
Hackers
all have the same motive
break into other people's computers
may legally break into computers as long as they do not do any damage
are people who are allergic to computers
An index register that is automatically incremented or decremented with each use is
Auto index
Asynchronous
Assembler
Compiler
What was the nick name of the computer used by the Americans in 1952 for their H-bomb project?
ENIAC
EDSAC
MANIAC
UNIVAC
In 1999, the Melissa virus was a widely publicised:
E-mail virus.
Macro virus.
Trojan horse.
Time bomb.
COBOL is an acronym for________
Common Business Oriented Language
Computer Business Oriented Language
Common Business Operated Language
Common Business Organized Language
One millisecond is
1 second
10th of a seconds
1000th of a seconds
10000th of a seconds
UNIVAC is
Universal Automatic Computer
Universal Array Computer
Unique Automatic Computer
Unvalued Automatic Computer
Which statement is valid about computer program?
It is understood by a computer
It is understood by programmer
It is understood user
Both a & b
The act of retrieving existing data from memory is called
Read-out
Read from
Read
All of above
In the IBM PC-At, what do the words AT stand for
Additional Terminals
Advance technology
Applied technology
Advanced terminology
ENIAC uses
Decimal Numbering System
Octal Numbering System
Binary Numbering System
Hexadecial Numbering System