Parallel in-Parallel out (PIPO) Shift Register The applications of these registers include communication lines because the main function of the SIPO register is to change serial information into parallel information. In this type of register, serial data input can be taken from the left side of the FF & generates an equivalent output. Serial in-Parallel out (SIPO) Shift Register Once the same CLK signal is given to every flip flop, then all the flip flops will be synchronous with each other. The first FF output is connected to the next FF input. The circuit can be built with four D-Flip Flops, and in addition, a CLR signal is connected to CLK signal as well as flips flops in order to rearrange them. The serial in parallel out (SIPO) shift register circuit is shown above. This shift register allows serial input and generates a parallel output, so this is known as serial in parallel out (SIPO) shift register. The main application of a SISO is to operate as a delay element. In this circuit, the serial data input can be taken from the left side of the FF (flip flop). Once these Flip flops connected with each other then the equal CLK signal is given to every flip flop. This circuit can be built with four D-Flip Flops in serially. The Serial in Serial out (SISO) logic circuit is shown above. ![]() Serial in – Serial out Shift Register (SISO) Because there is just one output, and at a time the data leaves the register one bit in a serial manner. ![]() ![]() This shift register allows serial input & generates a serial output, so this is named as SISO (Serial in Serial out) shift register.
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