What do you do with 144 7-segment displays ... [Frugha] picked a nice font and hand-coded lookup tables for each digit. The lookup tables are stored in ROM, saving precious RAM on the Arduino.
The above illustration highlights one segment of the liquid crystal layer in a monochrome twisted nematic (TN) seven-segment display (Image courtesy of LXD, Inc.) In their natural state ...
But LEDs are far from the only way to run a seven-segment display — check out this mechanical seven-segment display for proof of that. We’ve been seeing a lot of mechanical seven-segment ...
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