The above details of the serial-in, parallel-out shift register are fairly simple. Let’s illuminate four LEDs (light emitting diodes) with the four outputs ( Q A Q B Q C Q D). The practical application of the serial-in, parallel-out shift register is to convert data from serial format on a single wire to parallel format on multiple wires. If four data bits are shifted in by four clock pulses via a single wire at data-in, below, the data becomes available simultaneously on the four Outputs Q A to Q D after the fourth clock pulse. Therefore, a serial-in, parallel-out shift register converts data from serial format to parallel format.Īn Example of Using Serial-in, Parallel-out Shift Register It is different in that it makes all the internal stages available as outputs. A serial-in, parallel-out shift register is similar to the serial-in, serial-out shift register in that it shifts data into internal storage elements and shifts data out at the serial-out, data-out, pin.
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