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Digital Concepts
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Question
Demultiplexing is a logic function that ________.
Options
A. determines which of several inputs is the greatest
B. switches logic from one input to any of several output lines
C. switches logic from several inputs onto one output line
D. converts a code from one form to another
Correct Answer
switches logic from one input to any of several output lines
Digital Concepts problems
Search Results
1. The combination of waveforms consisting of the given figures 1 and 2 is generally referred to as ________.
Options
A. simultaneous waveforms
B. a timing diagram
C. two-phase waveforms
D. pulse waveforms
Show Answer
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Discuss
Correct Answer: a timing diagram
2. The systems shown in the given figure transfer data ________.
Options
A. serially
B. sequentially
C. in parallel
D. both serially and sequentially
Show Answer
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Discuss
Correct Answer: both serially and sequentially
3. The decimal system is composed of ________ symbols.
Options
A. 2
B. 8
C. 10
D. 16
Show Answer
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Discuss
Correct Answer: 10
4. The control and arithmetic/logic units are often considered as one unit called the ________.
Options
A. central processing unit
B. inputs and outputs
C. microcomputer
D. arithmetic/logic unit
Show Answer
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Discuss
Correct Answer: central processing unit
5. The invalid range for an input to TTL logic is from ________.
Options
A. 0 to 0.8 V
B. 1.2 to 1.6 V
C. 0.8 to 2.0 V
D. 2.0 to 5.0 V
Show Answer
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Discuss
Correct Answer: 0.8 to 2.0 V
6. To determine which of two binary numbers is larger, you could use a(n) ________.
Options
A. register
B. adder
C. encoder
D. magnitude comparator
Show Answer
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Discuss
Correct Answer: magnitude comparator
7. The set of instructions for a computer is called a(n) ________.
Options
A. program
B. input
C. output
D. control unit
Show Answer
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Discuss
Correct Answer: program
8. Other ________ are often used to interpret or represent binary quantities for the convenience of the people who work with and use these digital systems.
Options
A. analog systems
B. digital systems
C. number systems
D. binary systems
Show Answer
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Correct Answer: number systems
9. Memory devices that use electronic latching circuits are called ________.
Options
A. RAM
B. flip-flops
C. magnetic tape
D. DRAM
Show Answer
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Discuss
Correct Answer: flip-flops
10. ________ is the highest-value seven-bit binary number.
Options
A. 128
B. 127
C. 126
D. 125
Show Answer
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Discuss
Correct Answer: 127
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