A mode protocol defined in IEEE P1284 that provides a byte-wide channel from a computer to a peripheral.
An asynchronous, host-to-peripheral parallel port channel defined in the IEEE 1284-1944 standard. Compatible with existing peripherals that attach to the Centronics-style PC parallel port.
A feature of a computer or operating system that allows it to run programs written for a different system. Programs often run slower in compatibility mode.
A compatibility mode is a software mechanism in which a computer's operating system emulates an older processor, operating system, and/or hardware platform in order to allow obsolete software to remain compatible with the computer's newer hardware or software.