Exercise: Code Converters And Multiplexers

Questions for: Code Converters And Multiplexers

In a BCD-to-seven-segment converter, why must a code converter be utilized?
A:
to convert the 4-bit BCD into 7-bit code
B:
to convert the 4-bit BCD into 10-bit code
C:
to convert the 4-bit BCD into Gray code
D:
No conversion is necessary.
Answer: A
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A truth table with output columns numbered 0–15 may be for which type of decoder IC?
A:
hexadecimal 1-of-16
B:
dual octal outputs
C:
binary-to-hexadecimal
D:
hexadecimal-to-binary
Answer: A
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How many inputs are required for a 1-of-16 decoder?
A:
2
B:
4
C:
8
D:
16
Answer: B
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Which of the following is not a weighted value positional numbering system:
A:
hexadecimal
B:
binary-coded decimal
C:
binary
D:
octal
Answer: B
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A binary code that progresses such that only one bit changes between two successive codes is:
A:
nine's-complement code
B:
8421 code
C:
excess-3 code
D:
Gray code
Answer: D
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