Hi, I am designing a circuit which simulates the rolling of two dice, I am doing this through 2 x 555 timers which connect to a decade counter chip(4017) and have them at different frequencies to get different outputs. My problem is that i am struggling to connect the outputs to the 7 seg display. I am getting an output on my led's but not on my 7seg display, can anyone advise me as to what display to use and how to connect it up?