The circuit can be used as a clock. In this circuit the counter will advance after one minute or after every one second depending on the value of resistor selected. It can be used while cooking or while doing exercise or by students preparing for competitive exams.
This circuit is based on NE555 and CD4026, which is a Johnson counter IC commonly used in digital display. It has a 5 stage Johnson decade counter with decoder which converts the Johnson code to a 7 segment decoded output. It means input will be converted into numeric display which can be seen on 7 segment display.
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