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1.  
Which of the following is an input device?

Correct Answer: D [Keyboard]

Explanation:

A keyboard sends data into the computer; the other three show or give results (output).

2.  
ALU stands for:

Correct Answer: C [Arithmetic Logic Unit]

Explanation:

ALU = Arithmetic Logic Unit – the part of the CPU that calculates and compares.

3.  
Magnetic core memory was the main memory of which generation of computers?

Correct Answer: A [Second]

Explanation:

First generation – magnetic drums; second generation (transistors) – magnetic core memory.

4.  
Who is called the 'Father of the Computer'?

Correct Answer: B [Charles Babbage]

Explanation:

Charles Babbage designed the Difference Engine and the Analytical Engine.

5.  
Fill in the blank: GIGO stands for Garbage In, ________.

Correct Answer: C [Garbage Out]

Explanation:

GIGO = Garbage In, Garbage Out: wrong input gives wrong output.

6.  
Which of these works on a continuous physical quantity, i.e. is analog?

Correct Answer: D [Needle speedometer]

Explanation:

A needle speedometer shows speed as a smoothly moving pointer – continuous.

7.  
True or false? "The Control Unit performs the arithmetic operations of the computer."

Correct Answer: B [False]

Explanation:

Arithmetic is done by the ALU; the CU only fetches, decodes and directs.

8.  
One nanosecond is equal to:

Correct Answer: A [10⁻⁹ second]

Explanation:

milli 10⁻³, micro 10⁻⁶, nano 10⁻⁹, pico 10⁻¹².

9.  
Odd one out:

Correct Answer: B [Printer]

Explanation:

A printer is an output device; the others are input devices.

10.  
Which of the following is information (processed data) rather than raw data?

Correct Answer: B [Class average and rank list]

Explanation:

An average and a rank list are produced by processing the raw marks; the other three are raw facts.

11.  
Which part of the CPU holds the data being worked on at this moment, as the fastest storage?

Correct Answer: C [Registers]

Explanation:

Registers are tiny, very fast storage places inside the CPU.

12.  
Which of these is the least powerful class of computer?

Correct Answer: A [Microcomputer]

Explanation:

Order: super > mainframe > mini > micro.

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