Abstract: This metric is the ratio of the maintenance personnel who are actively doing the maintenance work (direct) to the maintenance personnel supporting the maintenance work (indirect). Direct personnel include those workers in the maintenance department that repair, maintain, modify or calibrate equipment.
MIDI (Musical Instrument Digital Interface) is a protocol designed for recording and playing back music on digital synthesizers that is supported by many makes of personal computer sound cards. Originally intended to control one keyboard from another, it was quickly adopted for the personal computer.
History MIDI is the acronym for Musical Instrument Digital Interface. It was defined by the Midi 1.0 specification which was agreed upon in august 1982. It was based upon the idea of a Local Area Network, since it was relatively inexpensive and simple to set up and run.