counters digital-electronics question and answers -Page 13

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Counters problems

1. In a 74192 BCD decade up-/down-counter, the terminal count up and the terminal count down are active-LOW.
Options
A. True
B. False

Correct Answer: True

2. When implementing a complete system application using IC counter chips, output devices such as LED indicators must be configured to operate from the counter outputs.
Options
A. True
B. False

Correct Answer: False

3. Generally speaking, the synchronous counter requires more circuitry than an asynchronous counter.
Options
A. True
B. False

Correct Answer: True

4. In many cases, counters must be strobed in order to eliminate glitches.
Options
A. True
B. False

Correct Answer: True

5. The 7447 has a 4-bit BCD input, seven individual active-LOW outputs, and a ripple blanking input and output.
Options
A. True
B. False

Correct Answer: True

6. Asynchronous counters are known as modulus counters.
Options
A. True
B. False

Correct Answer: False

7. Three cascaded modulus-10 counters have an overall modulus of 1000.
Options
A. True
B. False

Correct Answer: True

8. A parallel in/serial out shift register enters all data bits simultaneously and transfers them out one bit at a time.
Options
A. True
B. False

Correct Answer: True

9. The terminal marked A on the CTR block in the given figure is the SET terminal.
Options
A. True
B. False

Correct Answer: False

10. One characteristic of a ring counter is that the modulus is equal to the number of flip-flops in the register and, consequently, there are never any unused or invalid states.
Options
A. True
B. False

Correct Answer: False

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