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Digital Electronics
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Digital Concepts
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Question
How many unique symbols are used in the decimal number system?
Options
A. One
B. Nine
C. Ten
D. Unlimited
Correct Answer
Ten
Digital Concepts problems
Search Results
1. 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
2. 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
3. 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
Show Answer
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Correct Answer: three inputs and two outputs
4. A type of digital circuit technology that uses bipolar junction transistors is ________.
Options
A. TTL
B. CMOS
C. LSI
D. NMOS
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Correct Answer: TTL
5. Convert the fractional decimal number 6.75 to binary.
Options
A. 0111.1100
B. 0110.1010
C. 0110.1100
D. 0110.0110
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Correct Answer: 0110.1100
6. 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.
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Correct Answer: If one input to a 2-input AND gate is HIGH, the output reflects the other input.
7. 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
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Correct Answer: OR gate immediately followed by an inverter
8. Which of the following equations would accurately describe a four-input OR gate when
A
= 1,
B
= 1,
C
= 0, and
D
= 0?
Options
A. 1 + 1 + 0 + 0 = 01
B. 1 + 1 + 0 + 0 = 1
C. 1 + 1 + 0 + 0 = 0
D. 1 + 1 + 0 + 0 = 00
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Correct Answer: 1 + 1 + 0 + 0 = 1
9. Which of the following is not a basic Boolean operation?
Options
A. OR
B. NOT
C. AND
D. FOR
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Correct Answer: FOR
10. When reading a Boolean expression, what does the word "NOT" indicate?
Options
A. the same as
B. inversion
C. high
D. low
Show Answer
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Correct Answer: inversion
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