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A Level     Sequential Logic     >Shift Registers<    

Sequential Logic Shift Registers


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The Shift Register

SIMULATION

D Type Flip Flop Shift Register

Pseudo-Random Number Generator

SIMULATION

Notice the diagonal pattern in the truth table.

Each row is copied and shifted one place to the right.
All shift registers work like this.

D Type Flip Flop Pseudo Random Number Generator

Serial In, Parallel Out, SIPO

The shift register can be used to delay pulses.

It can also be used to collect a serial stream of pulses. Once all the bits (usually eight) have been collected (a byte) the stored data can be copied to an eight bit latch (a parallel device).

The data is clocked in one bit at a time. When all eight bits have been clocked in, the Parallel data is available at the output.

D Type Flip Flop Shift Register Serial In Parallel Out

Parallel in, Serial Out, PISO

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