| 摘要 |
PURPOSE: An expansion pack is provided to compatibly use various packs having an expansion function while minimizing a size of a PDA(Personal Digital Assistant), and to extend a use time of the PDA by using a subsidiary battery when the expansion pack is used. CONSTITUTION: The expansion pack includes a main body(20) of the expansion pack, a signal connection port(22) and a CF(Compact Flash) typed port(23) installed on the main body, and the subsidiary battery(25) installed in the main body. The expansion pack includes the third port(24) for connecting to a PCMCIA(Personal Computer Memory Card International Association) typed expansion pack. The subsidiary battery supplies power to the main body by attaching to an installation part(20a) on the main body.
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