Exercise: Digital Electronics

Questions for: Digital Electronics

For the logic circuit of the given figure, the minimized expression is
A:
B:
Y = A + B + C
C:
Y = A + B
D:
Y = ABC
Answer: A

+ A + C = A + B + C + A + C = A + C + B

=

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In following figure, the initial contents of the 4-bit serial in parallel out, right shift, shift register as shown in figure are 0110. After 3 clock pulses the contents of the shift register will be
A:
0000
B:
0101
C:
1010
D:
1110
Answer: C

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A parallel in-parallel out shift register can be used to introduce delay in digital circuits.
A:
True
B:
False
C:
D:
Answer: B

No time delay in this shift register since all bits are loaded and read simultaneously.

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In the circuit of the given figure, V0 =
A:
5 V
B:
3.1 V
C:
2.5 V
D:
0
Answer: A

Transistor is off and circuit current is zero.

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The inputs A and B of the given figure are applied to a two input NOR gate. The output waveform is
A:
B:
C:
D:
Answer: B
No answer description is available. Let's discuss.
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