![]() Capacitor C2 and Resistor R3 gives balance bias to monostable pulse and then decade counter IC 4026 receives pulse through Clock input pin 1. Here the timer IC 555 configured as monostable multivibrator and a Push button switch is connected to Trigger pin to give negative trigger input, depends on the timing Resistor R2 and timing Capacitor C1 timer IC produce Monostable Pulse. Decade counter IC 4026 receives pulse as a clock and counts each clock then drives seven segment LED to show the number. Here timer IC 555 works as a Monostable multivibrator and produce single pulse when the count key pressed. This simple seven segment counter circuit build with timer IC 555 and Decade counter IC 4026 and then common cathode type seven segment LED. This circuit will show and increase the number digit when the count key pressed. We count everything, in order to project or show the count value we need number display and here simple seven segment counter circuit designed to show the count value in single digit seven segment LED display.
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