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Digital Clock using one shift register

Here I am going to show you how to make Digital clock using Arduino Uno (while final assembling I used Arduino Nano because of its small size). Instead of giving load on Arduino I am using Real Time Clock (RTC) for timing purpose. Great thing about it is using only one shift register. I am using 4 seven segment display. To avoid wiring mess on breadboard i directly connected the seven segment display on the perf board.”

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