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MDAC

Reading: M duck
Full spelling: Microsoft Data Access Components
Field:
Windows > Programming > MDAC
Software > database > MDAC

Gathering of the program part for the database access which the Microsoft corporation offers. It is constituted from each component of ADO, ODBC and OLE DB. The standardized database access which does not depend on the difference of the manufacturer of the database and the difference of type is offered.

MD DATA <MD data>

Reading: Magnetic disk memory data
Field:
Storage > removable > MD DATA

Being something which remodelled one for music MD to data logging use, as for capacity the same as MD 140MB. Because the shutter is larger than for music MD, as one for music MD it is not possible to divert. Data rate being only a constant velocity CD suitable 1.2Mbps, because also the corresponding equipment is little, it did not spread excessively excluding part such as music compilation use. There is MD DATA2 as a succession standard, has the capacity of 650MB and the transfer rate of 9.4Mbps, but this spread is not advanced.

MD DATA2 <MD data 2>

Reading: Magnetic disk memory data two
Field:
Storage > removable > MD DATA2

The disk MD which SONY announced in 1996, was developed in one for music was diverted to the one for general-purpose data logging the revised edition “of MD DATA”. With MD DATA the memory capacity which is 140MB was expanded in 650MB which is a match to CD and the like, also data rate accelerated to 9.4Mbps. It did, e.g., the video camera “MD DISCAM” where SONY utilizes MD DATA2 is sold in 1999, but almost it did not spread.

MDF <Main switchboard>

Reading: Magnetic disk memory f
Full spelling: Main Distributing Frame
Field:
Communication service > communication industry > MDF

At central telephone exchange of the NTT regional company, the device which is between the circuit and the switchboard. Because at central telephone exchange it is necessary to accommodate the mass cable, before connecting to the switchboard, you connect to MDF which is the wiring distribution device in order to rearrange the cable. In 1999 Ministry of Posts and Telecommunications (the present general affairs ministry) because the direct connect to MDF by the common carrier other than NTT is rescinded, using the local channel net of NTT, it reached the point where it can offer ADSL connection service and the like.

MDF connection <MDF connection>

Reading: Magnetic disk memory f [se] [ku]
Field:
Communication service > broadband > xDSL > MDF connection

NTT (the east west regional company) the common carrier other than, MDF of NTT telephone inside (the main distributing frame) from connects the subscriber's loop with the equipment of retreat and the respective company. Via the switchboard of NTT, the equipment of the subscriber's loop and the common carrier can be connected directly. In order to actualize ADSL service, MDF connection is made necessary, but at the time of ADSL domestic introduction there are the details that common carrier which requires MDF connection and NTT which denies connection were opposed, recognized MDF connection to NTT halfway coercively with the Ministry of Posts and Telecommunications and the like pressure.