electronic circuit simulator?

where can i find a free circuit simulator doesent just show signals but that shows what the things do like leds light and switches switch and stuff

Have you tried this one?
http://www.falstad.com/circuit/index.html
BTW, it requires Java.
rkbrumbelow6 years ago
Nicepolicy16 suggested in an older instructable http://www.new-wave-concepts.com/lw_dl_ed.html as one that will do what you are asking for. Have you tried it out yet?