Proteus Software Help - CRC Circuit

Thread Starter


Joined Mar 3, 2016
Hi all,

Ive been asked to design this circuit(picattached) and then input data into it.
Say, 110111001, with 1001 being the CRC(cyclic redundancy check)
The probes in the circuit are supposed to let me know if there have been any errors,
but, i just cant seem to get any data into it, or get the probes to even change.

Switch one, the top switch is supposed to control the data,
Switch two, the middle one, controls clock,
Switch three, bottom one, controls the reset on the flip flops.

Anyone any idea on how i get this to work properly or what ive done wrong.?