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Electronics
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Sequential Logic Circuits
Comments
Question
An asynchronous counter differs from a synchronous counter in the method of clocking.
Options
A. True
B. False
Correct Answer
True
Sequential Logic Circuits problems
Search Results
1. A ripple counter is an asynchronous counter.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
2. The modulus (mod) of a counter is the same as its maximum count (N).
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
3. 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
Show Answer
Scratch Pad
Discuss
Correct Answer: True
4. A serial-in, serial-out shift register transfers data from one line of a parallel bus to another line one bit at a time.
Options
A. True
B. False
Show Answer
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Discuss
Correct Answer: False
5. Asynchronous inputs will cause the flip-flop to respond immediately with regard to the clock input.
Options
A. True
B. False
Show Answer
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Discuss
Correct Answer: False
6. Asynchronous counters are often called ________ counters.
Options
A. toggle
B. ripple
C. binary
D. flip-flop
Show Answer
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Discuss
Correct Answer: ripple
7. A _________ shift register can shift stored data either left or right.
Options
A. bidirectional
B. tri-state
C. universal
D. bidirectional universal
Show Answer
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Discuss
Correct Answer: bidirectional universal
8. To operate correctly, starting a ring counter requires __________.
Options
A. clearing one flip-flop and presetting all the others
B. clearing all the flip-flops
C. presetting one flip-flop and clearing all the others
D. presetting all the flip-flops
Show Answer
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Discuss
Correct Answer: presetting one flip-flop and clearing all the others
9. In order to use a shift register as a counter, ________.
Options
A. the register's serial input is the counter input and the serial output is the counter output
B. the parallel inputs provide the input signal and the output signal is taken from the serial data output
C. a serial-in, serial-out register must be used
D. the serial output of the register is connected back to the serial input of the register
Show Answer
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Correct Answer: the serial output of the register is connected back to the serial input of the register
10. Synchronous construction reduces the delay time of a counter to the delay of __________.
Options
A. all flip-flops and gates
B. a single flip-flop and a gate
C. all flip-flops and gates after a 3 count
D. a single gate
Show Answer
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Discuss
Correct Answer: a single flip-flop and a gate
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