Exercise: Code Converters And Multiplexers

Questions for: Code Converters And Multiplexers

When two or more inputs are active simultaneously, the process is called:
A:
first-in, first-out processing
B:
priority encoding
C:
ripple blanking
D:
first-in, first-out processing or priority encoding
Answer: B
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For the following conditions on a 7485 magnitude comparator, what will be the state of each of the three outputs?
A0 = 0B0 = 1IA < B = 0
A1 = 1B1 = 0IA = B = 1
A2 = 1B2 = 0IA > B = 0
A3 = 0B3 = 0 
A:
A = B = 0, A < B = 0, A > B = 1
B:
A = B = 0, A < B = 1, A > B = 0
C:
A = B = 1, A < B = 0, A > B = 0
D:
A = B = 0, A < B = 0, A > B = 0
Answer: A
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Why is the Gray code more practical to use when coding the position of a rotating shaft?
A:
All digits change between counts.
B:
Two digits change between counts.
C:
Only one digit changes between counts.
D:
Answer: C
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How is an encoder different from a decoder?
A:
The output of an encoder is a binary code for 1-of-N input.
B:
The output of a decoder is a binary code for 1-of-N input.
C:
D:
Answer: A
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A microcontroller differs from a microprocessor in that it has several ________ ports and ________ built into its architecture, making it better suited for ________ applications.
A:
communication, PROMs, control
B:
parallel, logic gates, processing
C:
input/output, memory, control
D:
data, memory, decoding
Answer: C
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