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 ...

From circuit simulation to embedded firmware testing and PCB design, Proteus lets you see how hardware and code work together ...

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 ...