The common name given to a Parallel Port on IBM and compatible machines.

Although people refer to the DB-25 female connector on the back of a PC as an LPT port, technically an LPT port is simply a parallel port set to LPT(x) with an I/O address and IRQ assigned to it, in the same way as a COM(x) port is actually a serial port set to COM(x).

Usually an individual machine will have 2 LPT ports although you can normally assign up to 3, these ports each with their own name LPT1, LPT2 and LPT3, although they were designed primarily for printers there is a wide variety of peripherals that can be connected to these ports.

see also Parallel Port.

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