help: ASM chart current/next state

Discussion in 'Homework Help' started by epicfrank, Jan 9, 2014.

  1. epicfrank

    Thread Starter New Member

    May 26, 2013
    5
    0
    hi everyone just had this confusing thing for circuit implementation from ASM chart, it says by the K-map we can find the minimal logic equation to generate the Next State Variable (say nS1 and nS0) and the output (Z) as the function of the current state (S1 and S0).

    so how is the relation between the next state variable and the current state? does the next state variable means that it comes from the current state or it is about to go through the current state? thanks very much.
     
  2. tshuck

    Well-Known Member

    Oct 18, 2012
    3,531
    675
    Next state refers to what state the state machine will go to when in the current state and given the proper stimulus (inputs).

    In an up/down counter, the next state is dependent on the current state and the count direction (e.g. Current state is 001 and counting up, the next state is 010; or, if current state is 001 and counting down, the next state is 000).

    You might want to check out the section on finite state machines.
     
    epicfrank likes this.
  3. epicfrank

    Thread Starter New Member

    May 26, 2013
    5
    0
    thanks tshuck ill go read through the finite state machine
     
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