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Description the circuit shown here is of a simple 0 to 9 display that can be employed in a lot of applications the circuit is based on asynchronous decade counter 7490ic2 a 7 segment display d1 and a seven segment decoder driver ic 7446 ic1. Connect one component with the other as per diagramclick on one edge of the first component and then click on the others edge a wire will connect both diagnose each component value and connection. The display counts from 0 9 and resets itself to zero before going further let us first discuss about seven segment displays before going further let us first discuss about seven segment displays. Here we are providing similar kind of counter circuit diagram in this led 7 segment display counter circuit we are using a single digital counter ic 4026 both as counter and 7 segment driver a common cathode 7 segment display is used here. The same 0 9 0 5 counter can also be done in an asynchronous way which is what the next two counters ll be about it is again an instance where it is not possible for me to explain the circuit by typing so look into the second scanned file