output cause the parallel port is outside the computer
A USB port is both an input and an output.
output
No. VGA port is not either serial or parallel port. It is a different interface. If you need a serial output, you need a VGA to serial converter.
input
output
output
usually sensor or digitized voltages on the inputs. if the port is parallel port, the input doesn't have to be serialized first. Output ports usually converted back to analog for some control application via D/A converters
Input port
wafi gila
A USB port is both and input and output port. Depends on what is connected to it as to which is functions as. Connect a camera and it is an input device. Connect a printer and it is an output device. Connect a printer/scanner and it is both.
It's an output. I think. The usb port is already in there, so it should be an output. An input is something you put in, and an output is something that comes out. Hope this helps. :)
A USB port takes a device that can be both an input and an output device. For instance, an external USB hard-drive can be written to (by keyboard) and data can be extracted (put up on the monitor or sent to a printer).