hey anyone know how to make a simple circuit with can count up to 99..
so basically if you press a button the display adds one to the numbewr being displayed..
i also have to make the circuit on bread board first.
The MC14518B is a dual BCD up counter. You can cascade the counters to count 2 digits (study the data sheet, you can figure out how to do it). Follow this with two 7447 BCD to 7-segment decoders. Post back if you have more questions.