| http://www.w3.org/ns/prov#value | - Shift Register/Expansion Module This board uses a 74HC595 serial-in parallel-out shift register which enables you to control eight digital outputs with only three digital pins, for example: You can daisy-chain these modules to increase the number of digital outputs in multiples of eight, all while only using the three digital output pins on your Arduino or other microcontroller.
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