Used a 2,3,4 and 7 tapped XOR 8 bit linear feedback shift register to generate a pseudo random hexadecimal output.
Each decoder is connected to half the register, but any pattern will do.
This 8 bit LSFR will generate 255 pseudo random hexadecimal combinations before the sequence repeats.
Change sim speed to speed up or slow down.
Note that the hex display does not represent the state of the register.
