8-Bit Shift Register: Serial In-Parallel Out

This page demonstrates the basic operation of a simple 8-bit shift register that accepts and outputs parallel data.

1. Click the serial input terminal (SR_in) to set the next input bit.
2. Click the CLK terminal to shift the input bit into the internal serial registers.
3. Click the G terminal to set up the output loading operation. Click the CLK terminal to transfer the content of the internal registers to the output.

Technical Stuff:

The operation for transferring the internal register data to the output is synchronous. This means that the actual transfer does not take place until the CLK pulse occurs.  You can set up the transfer anytime you want by clikcing the G terminal, but the actual transfer doesn't take place until the next CLK pulse.