Electronics and Communication Engineering - Digital Electronics

31. 

While __________ is the fastest unsaturated logic gate __________ has the excellent noise immunity?

A. ECL, TTL
B. TTL, ECL
C. ECL, RTL
D. RTL, DTL

Answer: Option C

Explanation:

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32. 

In a 4 bit D/A converter, the offset error is the output voltage when input digital voltage is

A. 1111
B. 0000
C. either 1111 or 0000
D. none of the above

Answer: Option B

Explanation:

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33. 

To convert SR latch to D latch

A. connect both S and R to D
B. connect D to S directly and D to R through inverter
C. connect D to R directly and D to S through inverter
D. connect S to D and leave R open

Answer: Option B

Explanation:

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34. 

If a RAM has 34 bits in its MAR and 16 bits its MAR, then its capacity will be

A. 32 GB
B. 16 GB
C. 32 MB
D. 16 MB

Answer: Option C

Explanation:

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35. 

The output voltage of 5-bit D/A binary ladder that has a digital input of 11010 (Assuming 0 = 0 V and 1 = + 10 V) is

A. 3.4375 V
B. 6.0 V
C. 8.125 V
D. 8.6875 V

Answer: Option C

Explanation:

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