Digital Electronics - Logic Gates

Exercise :: Logic Gates - General Questions

11. 

TTL operates from a ________.

A. 9-volt supply
B. 3-volt supply
C. 12-volt supply
D. 5-volt supply

Answer: Option D

Explanation:

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12. 

The output of a NOR gate is HIGH if ________.

A. all inputs are HIGH
B. any input is HIGH
C. any input is LOW
D. all inputs are LOW

Answer: Option D

Explanation:

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13. 

The switching speed of CMOS is now ________.

A. competitive with TTL
B. three times that of TTL
C. slower than TTL
D. twice that of TTL

Answer: Option A

Explanation:

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14. 

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

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

Answer: Option C

Explanation:

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15. 

The power dissipation, PD, of a logic gate is the product of the ________.

A. dc supply voltage and the peak current
B. dc supply voltage and the average supply current
C. ac supply voltage and the peak current
D. ac supply voltage and the average supply current

Answer: Option B

Explanation:

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