Electronics and Communication Engineering - Digital Electronics

1. 

A voltage DAC is generally slower than current DAC

A. because of more accuracy
B. because of higher resolution
C. because of response time of op-amp current to voltage converter
D. none of the above

Answer: Option C

Explanation:

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2. 

The circuit realizes the function

A. (A + B) E + CD
B. (A + B) (E + CD)
C. (A + B) (E + C + D)
D. (AB + E). CD

Answer: Option A

Explanation:

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3. 

For a NAND SR latch of input is the normal resting state of inputs is

A. S = R = 1
B. S = 0, R = 1
C. S = 1, R = 0
D. S = R = 0

Answer: Option A

Explanation:

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4. 

A mod-2 counter followed by a mod 5 is same as

A. mod-7 counter
B. A decade counter
C. mod-3 counter
D. none

Answer: Option B

Explanation:

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5. 

The write cycle time of memory is 200 nsec. The maximum rate of data which can be stored is

A. 200 words/sec
B. 5 x 103 words/sec
C. 5 x 106 word/sec
D. 5 x 109 words/sec

Answer: Option C

Explanation:

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