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Digital Electronics
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Digital Concepts
Comments
Question
A full subtracter circuit requires ________.
Options
A. two inputs and two outputs
B. two inputs and three outputs
C. three inputs and one output
D. three inputs and two outputs
Correct Answer
three inputs and two outputs
Digital Concepts problems
Search Results
1. A type of digital circuit technology that uses bipolar junction transistors is ________.
Options
A. TTL
B. CMOS
C. LSI
D. NMOS
Show Answer
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Discuss
Correct Answer: TTL
2. Convert the fractional decimal number 6.75 to binary.
Options
A. 0111.1100
B. 0110.1010
C. 0110.1100
D. 0110.0110
Show Answer
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Discuss
Correct Answer: 0110.1100
3. Convert the fractional binary number 0000.1010 to decimal.
Options
A. 0.625
B. 0.50
C. 0.55
D. 0.10
Show Answer
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Correct Answer: 0.625
4. What is the typical invalid voltage for a binary signal?
Options
A. 0.7?2.8 volts
B. 0.8?3 volts
C. 0.8?2 volts
D. 0.7?2.5 volts
Show Answer
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Correct Answer: 0.8?2 volts
5. A DAC changes ________.
Options
A. an analog signal into digital data
B. digital data into an analog signal
C. digital data into an amplified signal
D. none of the above
Show Answer
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Correct Answer: digital data into an analog signal
6. A demultiplexer has ________.
Options
A. one data input and a number of selection inputs, and they have several outputs
B. one input and one output
C. several inputs and several outputs
D. several inputs and one output
Show Answer
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Correct Answer: one data input and a number of selection inputs, and they have several outputs
7. What has happened to the advances in digital technologies over the past three decades?
Options
A. Slowed down considerably
B. Continued to increase, but at a decreasing rate
C. Made excellent progress
D. Nothing short of phenomenal
Show Answer
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Correct Answer: Nothing short of phenomenal
8. How many unique symbols are used in the decimal number system?
Options
A. One
B. Nine
C. Ten
D. Unlimited
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Correct Answer: Ten
9. With regard to an AND gate, which statement is true?
Options
A. An AND gate has two inputs and one output.
B. An AND gate has two or more inputs and two outputs.
C. If one input to a 2-input AND gate is HIGH, the output reflects the other input.
D. A 2-input AND gate has eight input possibilities.
Show Answer
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Correct Answer: If one input to a 2-input AND gate is HIGH, the output reflects the other input.
10. Logically, the output of a NOR gate would have the same Boolean expression as a(n):
Options
A. NAND gate immediately followed by an inverter
B. OR gate immediately followed by an inverter
C. AND gate immediately followed by an inverter
D. NOR gate immediately followed by an inverter
Show Answer
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Discuss
Correct Answer: OR gate immediately followed by an inverter
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