Sipo Shift Register Block Diagram. That means output of one d flip flop is connected as the input of next d flip flop. It is different in that it makes all the internal stages available as outputs.
All these flip flops are synchronous with each other since the same clock signal is applied to each one. Therefore a serial in parallel out shift register converts data from serial format to parallel format. 4 0 parallel in serial out shift registers a four bit parallel in serial out shift.
That covers the parallel out part.
By serial format we mean that the data bits are presented sequentially in time on a single wire or circuit as in the case of the data out on the block diagram below. There are four mode of operations of a shift register. The timing diagram of data shift through a 4 bit siso shift register how to design a 4 bit serial in parallel out shift register sipo. All these flip flops are synchronous with each other since the same clock signal is applied to each one.