CPU and its components Questions

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41.

Which part interprets program instructions and initiate control operations.

A

Input

B

Storage unit

C

Logic unit

D

Control unit

E

None of the above

Correct Answer: D

Control unit interprets program instructions and initiate control operations

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42.

The time required for the fetching and execution of one simple machine instruction is

A

Delay time

B

CPU cycle

C

Real time

D

Seek time

E

None of the above

Correct Answer: B

The time required for the fetching and execution of one simple machine instruction is CPU cycle time.

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43.

The time for which a piece of equipment operates is called

A

Seek time

B

Effective time

C

Access time

D

Real time

E

None of the above

Correct Answer: B

None.

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44.

The section of the CPU that selects, interprets and sees to the execution of program instructions

A

Memory

B

Register unit

C

Control unit

D

ALU

E

None of the above

Correct Answer: C

None.

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45.

The microcomputer, Intel MCS-80 is based on the widely used Intel

A

8080 microprocessor

B

8085 microprocessor

C

8086 microprocessor

D

8082 microprocessor

E

None of the above

Correct Answer: A

Intel MCS-80 is based on the widely used Intel 8080 microprocessor The MCS-80 (Micro Computer Set-80) was a family of 8-bit microprocessor chipsets developed by Intel. Introduced on April, 1974, the MCS-80 featured the 8080 CPU, the forefather of all modern x86-based microprocessors.

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46.

Most important advantage of an IC is its

A

Easy replacement in case of circuit failure

B

Extremely high reliability

C

Reduced cost

D

Low power consumption

E

None of the above

Correct Answer: B

The major advantages of integrated circuits over those made by interconnecting discrete components are as follows : Extremely small size

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47.

A path by which communication is achieved between a central processor and other devices is called

A

Audit trail

B

Network

C

Bus

D

Channel

E

None of the above

Correct Answer: C

In computer architecture, a bus (a contraction of the Latin omnibus) is a communication system that transfers data between components inside a computer, or between computers. This expression covers all related hardware components (wire, optical fiber, etc.) and software, including communication protocols.

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48.

The organization and interconnection of the various components of a computer system is

A

Architecture

B

Networks

C

Graphics

D

Designing

E

None of the above

Correct Answer: A

The organization and interconnection of the various components of a computer system is Architecture.

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49.

An index register that is automatically incremented or decremented with each use is

A

Auto index

B

Asynchronous

C

Assembler

D

Compiler

E

None of the above

Correct Answer: A

An index register that is automatically incremented or decremented with each use is Auto index.

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50.

Where have the program and data to be located before the ALU and control unit of a computer can operate on it?

A

Internal memory

B

Secondary memory

C

Microprocessor

D

Magnetic tapes

E

None of the above

Correct Answer: A

None.

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