This may have been asked a million times, I am sorry if it has. I looked for it, but couldn't find it. I was wondering how I could have a c++ app on a computer communicate with a series of electronic switches. The App would receive an input from the hardware (like a completed circut) and then produce an output, like opening or closing a switch. I do not even know where to begin. Do they sell electronic switches that you can connect to a usb port, that come with an sdk (ideal world lol). Any suggestions would be great. Thanks guys.

that may do it, I will need it to turn electromagnets on and off rapidly. This is why I may need my own application. Is it possible to use this chip with your own app? Does it come with an sdk (software development kit)?