State Diagrams
1. What is the number of flip flops required to implement a circuit that detects a sequence of 3 or more 1s(ones)?
2. Lets say we are asked to design a circuit for a vending machine that dispenses candy for Rs. 3 The input consists of a coin slot that can accept Rs. 1 and Rs. 2 coins. The number of states in its state diagram is:
3. For the problem described in Q2, suppose x and y are the inputs, z is the output and A(t) and B(t) represent the output bits of the flip flops used. Which of the following is the correct expression for A(t+1)?
4. For the problem described in Q2, suppose x and y are the inputs, z is the output and A(t) and B(t) represent the output bits of the flip flops used. Which of the following is the correct expression for B(t+1)?
5. For the problem described in Q1 suppose x is input, y is output and A(t) and B(t) represent the output bits of the flip flops used. Which of the following is the correct expression for y?