When I was younger, I designed a counter circuit to count form 1 to 8 and restart back at 1. Now I am trying to modify the circuit to count to 12.
I have enclosed the circuit for the 8 counter, and the binary count sequence.
I think that if I cnange the pin connect on pin 3 on IC 8A from high to pin 2, that would take the count to 12, but it would need to reset to 1 on the next clock pulse instead of continuing to count up.
Also, the display would need to be modified to show 10, 11, & 12 on two 7 seg dis. instead of the usual blank or 0, A, B on one display.
The IC's currently in use are 74LS107 JK Flip Flops, 74LS08 duel AND gates.
The CD4066 is used for isolation from other inputs going to the BCD to 7SEG decoder.
I have enclosed the circuit for the 8 counter, and the binary count sequence.
I think that if I cnange the pin connect on pin 3 on IC 8A from high to pin 2, that would take the count to 12, but it would need to reset to 1 on the next clock pulse instead of continuing to count up.
Also, the display would need to be modified to show 10, 11, & 12 on two 7 seg dis. instead of the usual blank or 0, A, B on one display.
The IC's currently in use are 74LS107 JK Flip Flops, 74LS08 duel AND gates.
The CD4066 is used for isolation from other inputs going to the BCD to 7SEG decoder.
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