Design a sequential digital circuit that detects a 4-BCD digits password. Assume that you are using # as an enter key where the password will be decided, by your circuit, to be right (output =1) or wrong (output = 0). Assign an unused BCD code for #. Assume that the password is 3542
I tried to solve it by converting each one of them to BCD , then I made the state diagram . But the the problem is I don't know how to do this state diagram correctly . Does anyone have any idea ?
By the way I don't need a code , I want to know theoretically what happens