4-digit RTC Clock

I have got a DS1302 Real Time Clock Module with Battery Backup, and I was eager to making a digital clock. As I also had a 7-segment 4-digit display, I was looking for the best way to make that clock. But I was always reluctant to use this type of display, because of the amount of wires it requires. Then, “digital tube” 4-wire 4-digit display came across, and I knew that was the solution I was searching for. Now I had all the pieces of my little system.”

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