Description:
- A Combinational Circuit with a State memory
- Outputs depend on inputs and state variables
Asynchronous sequential circuits:
- outputs and state change as soon as an input changes
Synchronous sequential circuits:
- outputs and state change only when a special input, the Clock, gets a certain value
State variable:
- Embodies the past history of the circuit
- Storage element to hold the state variables
- A clock to periodically advances the circuit
D Flipp Flop
- Digital Flip-Flop and Latches Symbols (electricaltechnology.org)
- There are many types of Flip Flop