66. What is a recirculating register?
(a) serial out connected to serial in
(b) all Q outputs connected together
(c) a r
(d)
67. By adding recirculating lines to a 4-bit parallel-in, serial-out shift register, it becomes a ________, ________, and ________-out register.
(a) parallel-in, serial, parallel
(b) serial-in, parallel, serial
(c) series-parallel-in, series, parallel
(d) bidirectional in, parallel, series
68. How can parallel data be taken out of a shift register simultaneously?
(a) Use the Q output of the first FF.
(b) Use the Q output of the last FF.
(c) Tie all of the Q outputs together.
(d) Use the Q output of each FF.
69. What is the difference between a shift-right register and a shift-left register?
(a) There is no difference.
(b)
(c)
(d)
70. Assume an 8-bit serial in/parallel out shift register needs to be cleared but has no clear input. How many clock cycles are required before a zero applied to the input appears on the QH output?
(a) 1
(b) 7
(c) 8
(d) 9
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