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Digital Electronics
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Digital Arithmetic Operations and Circuits
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Question
How many basic binary subtraction operations are possible?
Options
A. 4
B. 3
C. 2
D. 1
Correct Answer
4
More questions
1. Which type of ROM has to be custom built by the factory?
Options
A. ROM
B. mask ROM
C. EPROM
D. EEPROM
Show Answer
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Discuss
Correct Answer: mask ROM
2. The RST pin requires a HIGH to reset the 8051 microcontroller.
Options
A. True
B. False
Show Answer
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Correct Answer: True
3. How many clock pulses will be required to completely load serially a 5-bit shift register?
Options
A. 2
B. 3
C. 4
D. 5
Show Answer
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Discuss
Correct Answer: 5
4. A data selector is also called a demultiplexer.
Options
A. True
B. False
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Correct Answer: False
5. The ________ statement evaluates the variable status.
Options
A. IF/THEN
B. IF/THEN/ELSE
C. CASE
D. ELSIF
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Discuss
Correct Answer: IF/THEN
6. A NAND gate output is LOW only if all the inputs are HIGH.
Options
A. True
B. False
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Correct Answer: True
7. Edge-triggered flip-flops can be identified by the triangle on the clock input.
Options
A. True
B. False
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Correct Answer: True
8. How many select lines would be required for an 8-line-to-1-line multiplexer?
Options
A. 2
B. 3
C. 4
D. 8
Show Answer
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Discuss
Correct Answer: 3
9. A(n)________ is not a functional unit of a computer.
Options
A. input unit
B. memory unit
C. modem
D. control unit
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Correct Answer: modem
10. A modulus-12 ring counter requires a minimum of ________.
Options
A. 10 flip-flops
B. 12 flip-flops
C. 6 flip-flops
D. 2 flip-flops
Show Answer
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Discuss
Correct Answer: 12 flip-flops
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