What is SISO shift register - mbits-mirafra/digitalDesignCourse GitHub Wiki

A SISO (Serial-In, Serial-Out) register is a type of digital circuit that can store a single bit of data and shift it in and out one bit at a time.

The term "serial" refers to the fact that the data is processed one bit at a time, while "in" and "out" refer to the direction of the data flow. In a SISO register, data is input to the circuit through a single input bit, and the output is read from a single output bit. The data is shifted through the register in a sequential manner, with each bit being transferred to the next stage in the register one at a time.