PORTABLE DIGITAL TERMINAL AND PORTABLE DIGITAL TERMINAL SYSTEM HAVING THE SAME

PURPOSE: A portable digital terminal increasing the use convenience and a portable digital terminal system including the same are provided to freely interwork with the external input/output apparatus of various kinds of devices in a mobile environment. CONSTITUTION: A second connection unit(210) is installed to be detachable with various kinds of input-output devices. A storage(220) stores a driving program coping with of outside input-output devices. A controller(230) recognizes the outside input-output device connected through the second connection unit. The controller loads the driving program corresponding to the acknowledged external input/output instrument from the storage. The controller controls the acknowledged external input/output instrument to the loaded driving program.