4021 IC Shift Register - CD4021BE

Testing

4021 IC Shift Register - CD4021BE

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93 available.
$1.50 cad
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  • CD4021BE
  • Number of Pins: 16
  • Number of inputs: 8

By using a simple Shift Register like the CD4021, you can add up to 8 additional inputs, using only 3 pins on your Arduino.

 You can even connect multiple of these Shift Register together to have more inputs if needed while still only using 3 pins.