1. The problem statement, all variables and given/known data I'm trying to build a 2 bit counter using JK flip flops. In the simulation it counts up just fine, but when I switch it to count down, it starts at 3 and then goes to zero and counts up again. 2. Relevant equations 3. The attempt at a solution Here is my circuit diagram: When the switch is closed it should count down, and when it's open, it should count up. The clock is connected to a 555 timer, just didnt show it.