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What are Shift Registers?
Shift registers are an integrated circuit that can be used to change the source data from a serial stream to a parallel stream. They can be used to do other things as well, e.g. serial to serial, parallel to serial, etc. but this is dependent on which type of shift register you are using.
In this article, we are only going to focus on serial to parallel implementation. The image below shows the most basic representation of what is happening, the serial data is clocked into the chip, and the representative bits are placed on the outputs. The outputs are held at the appropriate state until they are changed.
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