Introduction to Digital Systems Design by Giuliano Donzellini & Luca Oneto & Domenico Ponta & Davide Anguita

Author:Giuliano Donzellini & Luca Oneto & Domenico Ponta & Davide Anguita
Language: eng
Format: epub
ISBN: 9783319928043
Publisher: Springer International Publishing

6.2.3 Shift Registers with Parallel Load

We have seen that registers with serial input and parallel outputs directly carry out serial–parallel conversion. To obtain the opposite conversion, from the parallel format to the serial format we must first load the data onto the register in parallel, and then make it shift serially.

We can do this by combining the structures we have already seen in the parallel and shift registers, with the help of multiplexers. The figure below shows the schematic of a 4-bit shift register with parallel load (we have omitted the initialization network).

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