Hardware hacking often seems like black magic to the uninitiated, which is why 123D Circuits is so cool: it allows you to learn electronics using a virtual Arduino board and breadboard without blowing ...

I’ve always appreciated simulation tools. Sure, there’s no substitute for actually building a circuit but it sure is handy if you can fix a lot of easy problems before you start soldering and making ...

QSPICE is an analog and mixed-signal simulator characterized by high simulation speed, accuracy and reliability. It is a new program and can be downloaded here. QSPICE is still in the demonstration ...