New
#1
What port do I use to send information to a piece of hardware?
This isn't really related to windows 7 (although I am using it and doing my programming based on it), I have a simple circuit consisting of a battery, a transistor and an LED.
I want to use the transistor to light up the LED by sending voltage to a cable. I tried using the USB port, however, it has a positive, negative and 2 data cables. Both cables are continuously sending data, so I cannot make the voltage 0 on any of them and stop the LED.
I've heard I must use a printer port, or an ATA connector, I am fairly unsure of what control software has over hardware. Any help is greatly appreciated!
Later edit: I mean other than using an USB interface