Exercise: Digital Electronics

Questions for: Digital Electronics

A . 0 =
A:
1
B:
A
C:
0
D:
A or 1
Answer: C

1.0 = 0 and 0.0 = 0.

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In the circuit of the given figure, Y =
A:
0
B:
1
C:
X
D:
X
Answer: A

XX = 0.

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11011 in gray code = __________ .
A:
100102
B:
111112
C:
111002
D:
100012
Answer: A

Change to decimal and then to binary.

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If A = 0101, then A' is
A:
1010
B:
1011
C:
1001
D:
0110
Answer: B

A' = 1010 + 1 = 1011.

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Two 2's complement number having sign bits X and Y are added and the sign bit of the result is Z. then, the occurrence of overflow is indicated by the Boolean function.
A:
XYZ
B:
X Y Z
C:
X YZ + XY Z
D:
XY + YZ + ZX
Answer: D

carry of a one bit full order is given by expression XY + YZ + ZX.

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