Are you expecting your simulation to run in real time? I suppose a simulator could attempt to do that (I have no idea if Proteus can or does), but most simulators run as fast as their algorithms will allow and then plot the results as a function of time. Sometimes they run faster than real time, but usually they run slower. It depends on the complexity of the circuit and the models involved. When I was designing IC's, there were times that we had to let a simulation run for over a week in order to simulate just a few milliseconds of actual operation.i think i find it i measure time in proteus and my phone stopwatch and find the program delayed by approx 15 seconds . i think this is may happen in simulation in programs
thanks
by Jake Hertz
by Aaron Carman
by Jake Hertz