Exercise: Digital Electronics

Questions for: Digital Electronics

Four inputs A, B, C, D are fed to a NOR gate. The output of NOR gate is fed to an inverter. The output of inverter is
A:
A + B + C + D
B:
A + B + C + D
C:
ABCD
D:
ABCD
Answer: A

Output = = A + B + C + D.

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The counter which require maximum number of FF for a given mod counter is
A:
Ripple counter
B:
BCD counter
C:
Ring counter
D:
Programmed counter
Answer: C
No answer description is available. Let's discuss.
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In a JK Master slave flip flop
A:
both master and slave are positively clocked
B:
both master and slave are negatively clocked
C:
master is positively clocked and slave is negatively clocked
D:
master is negatively clocked and slave is positively clocked
Answer: C

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26810 = __________ .
A:
10A16
B:
10B16
C:
10C16
D:
10D16
Answer: C

10C in hexadecimal = 1 x 162 + 12 = 268 in decimal.

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An AND gate has two inputs A and B and one inhibit input S. Out of total 8 input states, output is 1 in
A:
1 state
B:
2 states
C:
3 states
D:
4 states
Answer: A

Only one input, i.e., A = 1, B = 1 and S = 0 gives output 1.

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