Componentslist:
IC1 CD4520BE
IC2 CD4520BE
IC3 TL497ACN
R1  1%
R2 10k 5%
R3
R4 gr br or
R5 gr br or
R6 1k60 1%
R7 180 5%
C 10uF, 50V
C 10uF, 50V
C 473
C 473
D1 1N4148
D2
D3 1N4148
LED1 5mm red
LED2 5mm red



Reset:


Read byte:
- cb2low
- read port b
- cb2high