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- Question
The accuracy of the frequency counter depends on the:
Options- A. system clock frequency.
- B. number of displayed digits.
- C. sampling rate.
- D. display update rate.
- Correct Answer
- system clock frequency.
- 1. Address multiplexing is used to reduce the number of address lines.
Options- A. True
- B. False Discuss
- 2. Which type of ROM has to be custom built by the factory?
Options- A. ROM
- B. mask ROM
- C. EPROM
- D. EEPROM Discuss
- 3. The RST pin requires a HIGH to reset the 8051 microcontroller.
Options- A. True
- B. False Discuss
- 4. 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 Discuss
- 5. A data selector is also called a demultiplexer.
Options- A. True
- B. False Discuss
- 6. The ________ statement evaluates the variable status.
Options- A. IF/THEN
- B. IF/THEN/ELSE
- C. CASE
- D. ELSIF Discuss
- 7. A NAND gate output is LOW only if all the inputs are HIGH.
Options- A. True
- B. False Discuss
- 8. Edge-triggered flip-flops can be identified by the triangle on the clock input.
Options- A. True
- B. False Discuss
- 9. How many select lines would be required for an 8-line-to-1-line multiplexer?
Options- A. 2
- B. 3
- C. 4
- D. 8 Discuss
- 10. A(n)________ is not a functional unit of a computer.
Options- A. input unit
- B. memory unit
- C. modem
- D. control unit Discuss
More questions
Correct Answer: True
Correct Answer: mask ROM
Correct Answer: True
Correct Answer: 5
Correct Answer: False
Correct Answer: IF/THEN
Correct Answer: True
Correct Answer: True
Correct Answer: 3
Correct Answer: modem
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