Computer Arithmetic Quiz Questions And Answers

Computer arithmetic multiple choice and objective type questions and answers along with explanation.
1) Computer use thousands  of flip flops. To coordinate the overall action, a common signal called the ..... is sent to each flip - flop.?

1. latch
2. master
3. clock
4. slave
5. None of above

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Answer = C 
Explanation: To coordinate the overall action, a square wave signal called the clock is sent to each flip flop. This signal prevents the flip flop from changing states until the right time.

2) Which of the following flip flop is free from race around condition ?

1. SR flip flop
2. T flip flop
3. Master slave flip flop
4. All of above

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Answer = C 
Explanation:  Toggling more that once during a clock cycle is called racing. JK master slave flip flop avoids racing.

3)  Which logic family dissipates the minimum power ?

1. DTL
2. ECL
3. TTL
4. CMOS
5. None of above

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Answer = D 
Explanation: CMOS dissipates low power. Typically the static power dissipation is 10 nw per gate which is due to the flow of leakage currents.

4) The functional capacity of SSI devices is  ?

1. 1 to 11 gates
2. 12 to 99 gates
3. 100 to 10,000 gates
4. More than 10,000 gates
5. None of above

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Answer = A 
Explanation: No Explanation

5) What advantage do ICs have over discrete devices due to their greater complexity ?

1. Smaller size
2. Higher Reliability
3. Lower cost
4. All of above

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Answer =D 
Explanation: ICs can also combine analog and digital circuits on a single chip to create functions such as A/D converters and D/A converters. Such circuits offer smaller size and lower cost, but must carefully account for signal interference.

6)  A subtractor is usually not present in computer because ?

1. It is expensive
2. It is not possible to design it
3. The adder will take care of subtraction
4. None of above

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Answer = C 
Explanation: A subtractor can be designed using the same approach as that of an adder.

7)  A chip having 150 gates will be classified as  ?

1. SSI
2. MSI
3. LSI
4. VLSI

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Answer = C 
Explanation: Latent semantic indexing (LSI) is an indexing and retrieval method that uses a mathematical technique called Singular value decomposition (SVD) to identify patterns in the relationships between the terms and concepts contained in an unstructured collection of text.

8) Pseudo instructions are ?

1. assembler directive
2. instruction in any program that have no corresponding machine code instruction
3. instruction in any program whose presence or absence will not change the output for any input
4. None of above

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Answer = A 
Explanation: Pseudo instructions are simply the assembly instructions that do not have a direct machine language equivalent.

9) Programming in a language that actually controls the path of signals or data within the computer is called ?

1. micro programming
2. system programming
3. assembly programming
4. machine language programming

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Answer = A 
Explanation:No Explanation

10) Which of the following is not typically found in the status register of micro processor ?

1. overflow
2. zero result
3. negative result
4. none of above

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Answer = D 
Explanation: A status register or flag register  is a collection of flag bits for a processor. The status register is a hardware register which contains information about the state of the processor

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