Exercise: Digital Electronics

Questions for: Digital Electronics

The circuit of the given figure gives the output Y =
A:
AB
B:
A + B
C:
A B
D:
A + B
Answer: D

When any input is High, the corresponding transistor conducts and output is Low. Hence it is a NOR gate.

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What will be output for decimal input 82?
A:
0.82 V
B:
8 V
C:
0.1 V
D:
10 mV
Answer: A

Output for decimal input 82/(10000010) = 0.01 x 82 = 0.82 V.

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A 6 bit R-2R ladder D/A converter has a reference voltage of 6.5 V. It meets standard linearity then resolution in percent and volts.
A:
3% 7 V
B:
6.4 V, 2%
C:
0.1%, 1.57 V
D:
1.57%, 0.1 V
Answer: D

R-2R ladder, resolution =

Resolution in volts = .

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What will be conversion rate for a counter type A/D converter contains a 4 bit binary ladder and a counter driven by a 2 MHz clock. Then conversion time
A:
125
B:
125 x 103
C:
125 x 106
D:
None
Answer: B
No answer description is available. Let's discuss.
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The number of memory locations in which 14 address bits can access is
A:
1024
B:
2048
C:
4096
D:
16384
Answer: D

214 = 16384.

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