A data communication unit.

摘要

A data transmission unit (2) for transmitting data stored in a movable terminal unit (1a) to an upper unit (3) when the movable terminal unit (1a) is connected to the data transmission unit (2), comprising a coupler for directly coupling the unit (2) to a front or a rear stage data transmission unit without using a connecting cable; the coupler comprising data pins (b) for passing data from the movable terminal unit or the front stage data transmission unit to the rear stage data transmission unit or the upper unit (3), whereby the space between adjacent units (2) can be saved. <IMAGE>