Hi, what would you say is the best software for simple digital simulations?

I tried using Multisim, but everything runs insanely slow. The stuff I need to simulate uses 9 LS IC's (counters and logic). I guess I'm looking for something more basic than Multisim. Any suggestions?

Thanks

 

How old/slow is your computer? We have MultiSim installed in all the classroom computers and it runs slow in the older computers. One student made up a 4093b oscillator and it ran terribly slow on his computer, the exact same circuit ran at calculated speed (2hz) on a new computer.

What I should make clear, is I am referring to the led symbol going light and dark representing the led flashing. The O'scope displayed the proper signal on both computers.

 

Logisim

It doesn't do schematic capture, no power lines, etc to worry about, but allows you to set up gates and simulate the logic cirucit for further design and analysis in Multisim or Tina.

 

http://qucs.sourceforge.net/

Does logic and analog, schematics, very intuitive and simple to use, runs on Linux/Windows/OSX and the best thing it is free.