for a sec I thought DVI digital video input, a quick google will give you digital video interface. makes more sense. Computer terminology is too easy, that phrase says everytrhing about what the DVI circuit does. Its an interface between the screen and what it gets from somewhere (most likely your GFX card), so that the devices can interpret what the hell ur card is saying,then turn that into simple bits and chuck those bits to whatever device, chucks those signals to the screen itself. I havent even studied the technology but its pretty universal how these things work.