MIDI means, for its acronym in English, Musical Instrument Digital Interface, ie, Musical Instrument Digital Interface. System MIDI comes from Musical Instrument Digital Interface, this was created in the early 80s as data can say that the midi system is a Serious and one-way system, the MIDI protocol transmits approximately 31,250 pulses voltage (5 Volt) per second has a tolerancewhether of + - 1%, the value of the transmission rate is obtained by dividing a typical value (at the time) of a CPU speed (1 MHz or a multiple of the power of 2 Example 1,000,000/32) MIDI system itself is digital bone are existing 0 and 1, MIDI messages consist of trains (groups) of 8 bits each, however add 2 bits more to indicate the start and stop giving as full 10-bit real

The DIN is a standard that was developed by the "Deutsches Institut für Normung" (one might call the national standards organization in Germany). The DIN is facing many sectors, but we have tried to focus on the DIN-oriented electronics and computing. In the case of Enclosures means qualifying under the German legislation on racks and is standardized to DIN 41494-7.