Electronics and Communication Engineering - Digital Electronics

21. 

The problem of current lagging is associated with

A. DCTL gates
B. DTL gates
C. ECL gates
D. CMOS gates

Answer: Option A

Explanation:

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22. 

In a NOT gate the output is always the opposite of the input.

A. True
B. False

Answer: Option A

Explanation:

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23. 

"Micro-programming" is a technique

A. for programming the microprocessors
B. for writing small programs efficiently
C. for programming the control steps of a computer
D. for programming output/input

Answer: Option C

Explanation:

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24. 

Status register in the 8156 contains information about

A. the timer
B. the ports
C. both (a) and (b)
D. none of the above

Answer: Option C

Explanation:

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25. 

The noise margin of a TTL gate is about

A. 0.2 V
B. 0.4 V
C. 0.6 V
D. 0.8 V

Answer: Option B

Explanation:

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