In order to use a shift register as a counter, _________.
A) the register's serial input is the counter input and the serial output is the counter output
B) a serial- in, serial- out register must be used
C) the input is applied to the parallel inputs and the output is taken from the serial data output
D) the serial output of the register is connected back to its serial input

Question

Quizplus · Accepted Answer

Connecting the serial output back to the serial input allows the shift register to cycle through a sequence of states, effectively counting.

In Order to Use a Shift Register as a Counter