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.
A serial port is neither strictly an input device nor an output device; rather, it is a communication interface that can handle both input and output data. It allows for the transmission of data between a computer and peripheral devices, such as modems or printers. Depending on the direction of data flow, a serial port can function as an input, output, or both simultaneously.
A USB port is both an input and an output.
output
input
Input/Output Controller Card
output cause the parallel port is outside the computer
The Universal Serial Bus (USB) port is an input/output port that allows the transfer of data from the computer's hard drive to the portable hard drive (e.g. flash drive). The port serves as the communication mechanism between the two hard drives.
Input port
wafi gila
You would use a Loopback Plug, this allow an output signal to be returned as input.