Synchronous Sequential Logic Circuits. Not practical for use in synchronous sequential circuits. On the other hand in case of an asynchronous circuit all the state variables may not change their state simulteneously to achieve the next steady internal state.
Nearly all sequential logic today is clocked or synchronous logic. Holdsworth bsc eng msc fiee r c. In a synchronous sequential circuit all the state variables representing the internal state of the circuit change their state simulteneously with a given input clock signal to achieve the next state.
In automata theory and digital electronics synchronous circuit is a digital circuit in which the changes in the state of memory elements are synchronized by a clock signal.
S 1 r 0 set state q will become. In a sequential digital logic circuit data is stored in memory devices called flip flops or latches. Synchronous sequential circuits are digital sequential circuits in which the feedback to the input for next output generation is governed by clock signals. On other hand asynchronous sequential circuits are digital sequential circuits in which the feedback to the input for next output generation is not governed by clock signals.
