The idea of what a computer is is in flux right now. But we are not entirely doing away with screens on them or attached to them yet. The future of computing may be ambient but right now, we are not there yet. Our computers still need monitors and those still have to be attached via cables.
The older connectors are DVI, S video and VGA. These are barely in use now unless the computer and monitor you are using are significantly old. The newer monitor cables are DisplayPort, HDMI, and ... Read more