Digital board simulation

The process for simulating a circuit is very similar to testing a hardware prototype circuit with signal generators and logic analyzers. To simulate a circuit, you first specify a set of stimulus signals for the inputs of the circuit. The simulator then propagates these signals through the device models to determine the circuit outputs at each point in time. After a set time, the simulator displays the input and output waveforms. You now can determine if the outputs are correct for the specified inputs. The simulator will also indicate any signal timing violations such as failure of a signal to obey the setup time of a flip-flop, an insufficient pulse width, etc. Thus, you can verify the circuit´s logic and timing without building a physical prototype