1.

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
Answer» B. Serial-in, parallel, serial


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