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4

Why are vacuum tubes also called valves?

A. Because they can amplify the weak signals and make them strong

B. Because they can stop or allow the flow of current

C. Both of above

D. None of above

Correct Answer :

B. Because they can stop or allow the flow of current


Related Questions

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ABC is a

A. Special purpose computer

B. General purpose computer

C. All Purpose Computer

D. None of above

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Which of the following is first generation of computer

A. EDSAC

B. IBM-1401

C. CDC-1604

D. ICL-2900

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Compression of digital data for efficient storage is

A. Buffer

B. CPU

C. Packing

D. Field

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The 2's compliment of a binary no. is obtained by adding________to its 1's compliment.

A. 0

B. 1

C. 10

D. 12

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Which is used for manufacturing chips?

A. Bus

B. Control unit

C. Semiconductors

D. A and b only

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4

A stand-alone system which produces one page of printed output at a time is

A. Page printer

B. Line printer

C. Laser printer

D. Dot matrix printer

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4

A 32 bit microprocessor has the word length equal to

A. 2 byte

B. 32 byte

C. 4 byte

D. 8 byte

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The brain of any computer system is

A. Control Unit

B. Arithmetic Logic Unit

C. Central Processing Unit

D. Storage Unit

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Programs are executed on the basis of a priority number in a

A. Batch processing system

B. Multiprogramming

C. Time sharing

D. None of these

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4

Which is valid statement?

A. 1 KB = 1024 Bytes

B. 1 MB = 1024 Bytes

C. 1 KB = 1000 Bytes

D. 1 MB = 1000 Bytes

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4

The two major types of computer chips are

A. External memory chip

B. Primary memory chip

C. Microprocessor chip

D. Both b and c

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4

Who invented the high level language C?

A. Dennis M. Ritchie

B. Niklaus Writh

C. Seymour Papert

D. Donald Kunth

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4

The language that the computer can understand and execute is called

A. Machine language

B. Application software

C. System program

D. All of above

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4

Modern Computers are very reliable but they are not

A. Infallible

B. Cheap

C. Powerful

D. Fast

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Hard disk is coated in both sides with

A. Magnetic metallic oxide

B. Optical metallic oxide

C. Carbon layer

D. All of the above

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The full form of EEPROM is

A. Electrically Erasable Programmable Read Only Memory

B. Easily Erasable Programmable Read Only Memory

C. Electronic Erasable Programmable Read Only Memory

D. None of the above

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4

Which of the following is a feature of fifth generation computers?

A. Use of natural language

B. artificial intelligence

C. bio-chips

D. All of above

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4

Personnel who design, program, operates and maintains computer equipment refers to

A. Console-operator

B. Programmer

C. Peopleware

D. System Analyst

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4

A disadvantage of the laser printer is

A. It is quieter than an impact printer

B. It is very slow

C. The output is of a lower quality

D. None of the above

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4

Which statement is valid about computer program?

A. High level languages must be converted into machine language to execute

B. High level language programs are more efficient and faster to execute

C. It is more difficult to identify errors in high level language program than in low level programs

D. All of above

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4

FORTRAN is

A. File Translation

B. Format Translation

C. Formula Translation

D. Floppy Translation

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________ are used to identify a user who returns to a Website

A. Cookies

B. Plug-ins

C. Scripts

D. ASPs

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4

Access time is

A. seek time + latency time

B. seek time

C. seek time ? latency time

D. latency time

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4

When was vacuum tube invented?

A. 1900

B. 1906

C. 1910

D. 1880

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4

When was the first electro-mechanical computer developed?

A. 1880

B. 1990

C. 1944

D. None of above

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4

FORTRAN is

A. File Translation

B. Format Translation

C. Formula Translation

D. Floppy Translation

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4

A type of channel used to connect a central processor and peripherals which uses multiplying is known as

A. Modem

B. Network

C. Multiplexer

D. All of the above

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4

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

A. Bug

B. Vice

C. Lice

D. Worm

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4

UNIVAC is

A. Universal Automatic Computer

B. Universal Array Computer

C. Unique Automatic Computer

D. Unvalued Automatic Computer

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Through which device the main components of the computer communicate with each other?

A. Keyboard

B. System Bus

C. Monitor

D. Memory