| 摘要 |
A handheld data-processing device in the form of a personal digital assistant (PDA) (10) for use in an industrial environment includes an expansion module (100) arranged to be releasably fixed to a rear face of the PDA (10) and so as to be operatively coupled thereto. Each of the PDA (10) and the expansion module (100) includes a respective data communications connector (50, 150). Each connector (50, 150) is the same as the other connector (50, 150). Each connector (50, 150) includes two parallel rows of terminals (60, 70), with the terminals (60) of the first row projecting further from the remainder of the connector (50, 150) that the connectors (70) of the second row. The terminals (60) of the first row in each connector (50, 150) are for connecting with the connectors (70) of the second row in the respective other connector (50, 150) when the two connectors (50, 150) are brought together. Supporting structure of each connector (50, 150) is insert moulded around the terminals (60, 70) to create a seal therebetween. The module (100) is accommodated in a recess in the PDA (10) to provide positive location therebetween.
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