This circuit counts on a base 10 system. It counts up to 99 and then repeats. One can add as many digits as they want to... All that has to be done is repeat the circuitry.
The digital wave generator controls the count up function of the counter, which in turn registers the count into the first seven segment decoder.
The AND gate is used as a hexadecimal to decimal converter, changing 1010 from A to 0 by connecting the output of the AND gate to the reset and the clock to the second Binary counter. The second AND gate (AND 2) does the same as the first and can be connected to the next digit if required.
I hope you enjoy the display😊
