Digital Electronics - Describing Logic Circuits

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Exercise :: Describing Logic Circuits - General Questions

1. 

The format used to present the logic output for the various combinations of logic inputs to a gate is called a(n):

A. truth table.
B. input logic function.
C. Boolean constant.
D. Boolean variable.

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

2. 

What is the basic difference between AHDL and VHDL?

A. ADHL is used in all PLD's.
B. VHDL is used in all PLD's.
C. ADHL is proprietary.
D. VHDL is proprietary.

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

3. 

A small circle on the output of a logic gate is used to represent the:

A. Comparator operation.
B. OR operation.
C. NOT operation.
D. AND operation.

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

4. 

For a three-input OR gate, with the input waveforms as shown below, which output waveform is correct?

A. a
B. b
C. c
D. d

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

5. 

Which of the figures given below represents a NOR gate?

A. a
B. b
C. c
D. d

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.