Asynchronus mod 8

This 3-bit digital counter is a sequential circuit that uses JK flipflops and a digital clock. For each clock tick, the 3-bit output increments by one. After it reaches it's maximum value of 7 (calculated by 2^3-1), it resets to zero. Each probe measures one bit of the output, with PR1 measuring the least significant bit and PR3 measuring the most significant bit. PR5 is the clock.