Is that ok !

Discussion in 'General Electronics Chat' started by blowouter, Nov 3, 2012.

  1. blowouter

    Thread Starter New Member

    Sep 28, 2012
    18
    1
    i simulate in proteus a digital clock project using 7490 ic , the seconds is ok but the minutes is not sixty exactly it's 75 seconds i think my circuit is ok but is that error in circuit or in proteus
    thanks in advance.
     
  2. blowouter

    Thread Starter New Member

    Sep 28, 2012
    18
    1
    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
     
  3. HonT

    New Member

    Oct 25, 2012
    14
    2
    You definitely have to check the voltage at your supply pins
     
  4. WBahn

    Moderator

    Mar 31, 2012
    17,720
    4,788
    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.
     
  5. blowouter

    Thread Starter New Member

    Sep 28, 2012
    18
    1
    i think that too , i will try it in normal world to ensure this
    thanks for helping
     
Loading...