Analysis of SSCs

Procedure

  1. Write logic expressions for the next-state () and the output () in terms of the current state () and the input ()
  2. Construct the state assigned table, simplify is possible
  3. Draw the state diagram if desired

Analysis involves figuring out the circuit behaviour, usually a state table or state diagram.

Example

Consider the following circuit:

We can write the output as , and the flip-flop inputs as , , , and .

This gives us the state assigned table:

Knowing how J-K flip-flops work, we can deduce from the help of a K-map:

  • means that
  • means

We get the following state assigned table: