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, seriesThe question was asked in a job interview.This is a very interesting question from Shift Register Counters topic in portion Registers of Digital Circuits

By adding recirculating lines to a 4-bit parallel-in serial-out shift

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, seriesThe question was asked in a job interview.This is a very interesting question from Shift Register Counters topic in portion Registers of Digital Circuits
Answer» Correct option is (a) Parallel-in, serial, parallel Easiest explanation: One bit shifting takes PLACE just after the output obtained on EVERY register. Hence, by ADDING recirculating lines to a 4-bit parallel-in serial-out shift register, it becomes a Parallel-in, Serial, and Parallel-out register. Since, the bots can be inputted all at the same TIME, while the data can be outputted either one at a time or simultaneously.

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