Exercise: Code Converters And Multiplexers

Questions for: Code Converters And Multiplexers

From the following list of input conditions, determine the state of the five output leads on a 74148 octal-to-binary encoder.
I0 = 1 I3 = 1 I6 = 1
I1 = 1 I4 = 0 I7 = 1
I2 = 1 I5 = 1 EI = 0
A:
GS = L, A0 = L, A1 = L, A2 = H, EO = H
B:
GS = L, A0 = H, A1 = L, A2 = L, EO = H
C:
GS = L, A0 = L, A1 = H, A2 = L, EO = H
D:
GS = L, A0 = H, A1 = H, A2 = L, EO = H
Answer: D
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Which digital system translates coded characters into a more useful form?
A:
encoder
B:
display
C:
counter
D:
decoder
Answer: D
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Use the weighting factors to convert the following BCD numbers to binary.

0101 0011        0010 0110 1000

A:
01010011    001001101000
B:
11010100    100001100000
C:
110101        100001100
D:
101011        001100001
Answer: C
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In a Gray code, each number is 3 greater than the binary representation of that number.
A:
True
B:
False
C:
D:
Answer: B
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How many outputs are on a BCD decoder?
A:
4
B:
16
C:
8
D:
10
Answer: D
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