Shift Registers – Exercise – 2

61. Ring shift and Johnson counters are:

(a) synchronous counters
(b) aynchronous counters
(c) true binary counters
(d) synchronous and true binary counters

Answer
Answer : (a)
Explanation
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62. How is a strobe signal used when serially loading a shift register?

(a) to turn the register on and off
(b) to control the number of clocks
(c) to determine which output Qs are used
(d) to determine the FFs that will be used

Answer
Answer : (b)
Explanation
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63. A sequence of equally spaced timing pulses may be easily generated by which type of counter circuit?

(a) ring shift
(b) clock
(c) Johnson
(d) binary

Answer
Answer : (a)
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64. What type of register would have a complete binary number shifted in one bit at a time and have all the stored bits shifted out one at a time?

(a) parallel-in, parallel-out
(b) parallel-in, serial-out
(c) serial-in, parallel-out
(d) serial-in, serial-out

Answer
Answer : (c)
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65. To keep output data accurate, 4-bit series-in, parallel-out shift registers employ a ________.

(a) divide-by-4 clock pulse
(b) sequence generator
(c) strobe line
(d) multiplexer

Answer
Answer : (c)
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