Anyone know of any programs that allow you to control an outside citcut?

[override56]

Any external device. send \ receive data, usb port, keyboards etc... how hard is it to send a signal through the usb port?

[bold9000-user]

If you want to use a computer to control a circuit or anything, I have been using Phidgets. Look up phidgets.com and they have all kinds of usb controllers and you can use a number of different programs. They have many examples where you can just modify the code slightly for your application.