Exercise: Digital Electronics

Questions for: Digital Electronics

Am equivalent 2's complement representation of the 2's complement number 1101 is
A:
110100
B:
001101
C:
110111
D:
111101
Answer: D

2's complement of (1101)2 = 0011

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9's complement of 5610 is
A:
4310
B:
8410
C:
6510
D:
5310
Answer: A

99 - 56 = 43.

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The number of select lines in a 16 : 1 multiplexer are
A:
4
B:
3
C:
2
D:
1
Answer: A

24 = 16.

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If the inputs to a 2 input XOR gate are high then, the output is high.
A:
True
B:
False
C:
D:
Answer: B

Output is Low.

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For a Mod 64 parallel counter we need
A:
6 flip flops
B:
6 flip flops and 2 AND gates
C:
6 flip flops and 4 AND gates
D:
none of the above
Answer: C

26 = 64

So we need 6 flip-flops and (6 - 2) = 4 AND gates.

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