fourDigitSevenSegmentDisplay

Seven segment displays - practical examples.

Part 1 is a single Seven segment display connected to Arduino UNO.
Part 2 is two Seven segment displays connected to Arduino UNO via shift registers.

See https://www.marginallyclever.com/2017/02/shift-registers-and-seven-segment-displays-in-arduino
for the tutorial, discussion, and lots of other great stuff.

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