Technology / Computers / Serial Port: A port, or interface, that can be used for serial communication, in which only 1 bit is transmitted at a time. Most serial ports on personal computers conform to the RS-232C or RS-422 standards. A serial port is a general-purpose interface that can be used for almost any type of device, including modems, mice, and printers (although most printers are connected to a parallel port).
Technology / Computers / PS-2 Port: A type of port developed by IBM for connecting a mouse or keyboard to a PC. The PS/2 port supports a mini DIN plug containing just 6 pins. Most PCs have a PS/2 port so that the serial port can be used MORE
Technology / Computers / Universal Serial Bus (USB): A 12Mbit/sec interface over a four wire connection. Can support up to 127 daisy chained devices. Very common interface for peripherals like keyboards, mice, and printers. MORE