Recently I have been learning electronics and realized that a circuit simulator could be useful. Of course I wanted one that was easy to use and free. After doing some Google searches, I found one called TINA-TI. It is free, easy to download and simple to use. It runs on Windows 7 and Windows XP systems.
The link to it is:
http://www.ti.com/tool/tina-ti
There is a quick start guide on the same page in PDF format.
For mac?
Is there anything out there that fits the ‘free and easy to use’ requirement for mac?
EveryCircuit for Android
I have tried to play with the EveryCircuit program from Google Play and it looks promising for small circuit.
https://play.google.com/store/apps/details?id=com.everycircuit.free&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5ldmVyeWNpcmN1aXQuZnJlZSJd
Check out the free version.
Yenka
Tik-Tok, take a look at the software called ‘Yenka Technology’. I used this at school when it was known as Crocodile Clips and recently had a play with it (though on a Windows machine, not a Mac, thought it looks like a Mac version is available).
http://www.yenka.com/en/Free_home_licences/