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Digital Electronics - Describing Logic Circuits

Exercise : Describing Logic Circuits - General Questions
11.
Which of the examples below expresses the associative law of addition:
A + (B + C) = (A + B) + C
A + (B + C) = A + (BC)
A(BC) = (AB) + C
ABC = A + B + C
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
How are the statements between BEGIN and END not evaluated in VHDL?
Constantly
Simultaneously
Concurrently
Sequentially
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.

Which logic gate does this truth table describe?

AND
OR
NAND
NOR
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.

For a 3-input NAND gate, with the input waveforms as shown below, which output waveform is correct?

a
b
c
d
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.

Which of the figures given below represents a NAND gate?

a
b
c
d
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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