Ugh, epilipsy warning!!
Please comment for corrections!
A Johnson counter implemented with D-Flip flops. It's a type of register that back-feeds Q'(0) into D(3).
I guess this is how you get a semi-random pattern for a technical looking display for a 50s sci-fi movie. Blinking lights everywhere!
555 Timer = Clk
Primary states are
0000->1000->0100->0010->0001
Output for the LEDs seem to be
0000->0010->0011->1011->1111->
->1101->1100->0100->0000
In my textbook, I saw a 3 D-Flip-Flop with a state of:
101<-->010
for the secondary state.
In the four D-Flipflop version, the secondary state is:
0000->
->0001->1010->0111->
->1001->1110->0101->
->1000->0110->0001
back to 0001
Adjust bottom counter and top counter (R2+R1) to increase period by increasing ohmage. Adjust top counter (R1) to increase on-time top counter.
To EveryCircuit Peeps: Need Moar Space :P
