Exercise: Digital Electronics

Questions for: Digital Electronics

Decimal 8 in excess-3 code =
A:
1000
B:
1001
C:
1011
D:
1111
Answer: C

Decimal 8 in excess 3 code = decimal 11 = 1011 in binary.

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To count 1000 bottles in a milk plant, the minimum number of flip flops requires is
A:
12
B:
10
C:
8
D:
6
Answer: B

20 = 512 and 210 = 1024 Hence at least 10 flip-flops are required.

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A + (B . C) =
A:
A . B + C
B:
A . B + A . C
C:
A
D:
(A + B) . (A + C)
Answer: D

This is distributive law.

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With four Boolean variables, how many Boolean expressions can be performed?
A:
16
B:
256
C:
1024 (1 K)
D:
64K (64 x 1024)
Answer: D

224 = 216.

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127416 - 3A716 = __________ .
A:
ACA16
B:
ACB16
C:
ECD16
D:
AAA16
Answer: C

Convert to decimal, subtract and change the result to hexadecimal.

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