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- Question
A 4-bit up/down binary counter is in the DOWN mode and in the 1100 state. To what state does the counter go on the next clock pulse?
Options- A. 1101
- B. 1011
- C. 1111
- D. 0000
- Correct Answer
- 1011
- 1. What is meant by parallel load of a counter?
Options- A. Each FF is loaded with data on a separate clock.
- B. The counter is cleared.
- C. All FFs are preset with data. Discuss
- 2. A 12 MHz clock frequency is applied to a cascaded counter containing a modulus-5 counter, a modulus-8 counter, and a modulus-10 counter. The lowest output frequency possible is ________.
Options- A. 10 kHz
- B. 20 kHz
- C. 30 kHz
- D. 60 kHz Discuss
- 3. A multiplexed display being driven by a logic circuit:
Options- A. accepts data inputs from one line and passes this data to multiple output lines
- B. accepts data inputs from several lines and allows one of them at a time to pass to the output
- C. accepts data inputs from multiple lines and passes this data to multiple output lines
- D. accepts data inputs from several lines and multiplexes this input data to four BCD lines Discuss
- 4. Which of the following groups of logic devices would be the minimum required for a MOD-64 synchronous counter?
Options- A. Five flip-flops, three AND gates
- B. Seven flip-flops, five AND gates
- C. Four flip-flops, ten AND gates
- D. Six flip-flops, four AND gates Discuss
- 5. Which segments of a seven-segment display would be required to be active to display the decimal digit 2?
Options- A. a, b, d, e, and g
- B. a, b, c, d, and g
- C. a, c, d, f, and g
- D. a, b, c, d, e, and f Discuss
- 6. How many different states does a 2-bit asynchronous counter have?
Options- A. 1
- B. 2
- C. 4
- D. 8 Discuss
- 7. Synchronous construction reduces the delay time of a counter to the delay of:
Options- A. all flip-flops and gates
- B. all flip-flops and gates after a 3 count
- C. a single gate
- D. a single flip-flop and a gate Discuss
- 8. A BCD counter is a ________.
Options- A. binary counter
- B. full-modulus counter
- C. decade counter
- D. divide-by-10 counter Discuss
- 9. How many natural states will there be in a 4-bit ripple counter?
Options- A. 4
- B. 8
- C. 16
- D. 32 Discuss
- 10. What is the difference between a 7490 and a 7493?
Options- A. 7490 is a MOD-10, 7493 is a MOD-16
- B. 7490 is a MOD-16, 7493 is a MOD-10
- C. 7490 is a MOD-12, 7493 is a MOD-16
- D. 7490 is a MOD-10, 7493 is a MOD-12 Discuss
Counters problems
Search Results
Correct Answer: All FFs are preset with data.
Correct Answer: 30 kHz
Correct Answer: accepts data inputs from several lines and allows one of them at a time to pass to the output
Correct Answer: Six flip-flops, four AND gates
Correct Answer: a, b, d, e, and g
Correct Answer: 4
Correct Answer: a single flip-flop and a gate
Correct Answer: decade counter
Correct Answer: 16
Correct Answer: 7490 is a MOD-10, 7493 is a MOD-16
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