i am trying to design a exercise/game project for two workout people. It would have an A and B side. Player A would push a button and two of the 7 segment LED’s would count from 1-15 at a fast rate. When the button was released, player A would have to do that many reps. (ie 8 push-ups). After that certain number was completed, player A would push a confirm button and it would total the score. Player B would then push the B side for his random number, do the exercise and push B side confirm button totaling his number. I would like the total sums to reach at least 255 on 3 seven segment LED’s. I have created the random 1-15 with out issues and know how to add 8 bit numbers together but can’t figure out how to continually add the random numbers together by just pushing a button. Does anyone have any ideas?