Exercise: Digital Electronics

Questions for: Digital Electronics

Both OR and AND gates can have only two inputs.
A:
True
B:
False
C:
D:
Answer: B

Any number of inputs are possible.

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Decimal number 10 is equal to binary number
A:
1110
B:
1010
C:
1001
D:
1000
Answer: B

1010 = 8 + 2 = 10 in decimal.

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An OR gate has 4 inputs. One input is high and the other three are low. The output
A:
is low
B:
is high
C:
is alternately high and low
D:
may be high or low depending on relative magnitude of inputs
Answer: B

In OR any input high means high output.

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2's complement of binary number 0101 is
A:
1011
B:
1111
C:
1101
D:
1110
Answer: A

1's complement of 0101 is 1010 and 2's complement is 1010+1 = 1011.

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The resolution of an n bit DAC with a maximum input of 5 V is 5 mV. The value of n is
A:
8
B:
9
C:
10
D:
11
Answer: C

1000 = 5 or N = 10.

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