Abstract: 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.

Abstract: A PDA (10) and an external battery pack (100) for fitting thereto. The battery pack (100) can be used to supplement an internal battery of the PDA (10). The PDA (10) has electrical contacts (40) that are for contacting electrical contacts (140) of the battery pack (100). The electrical contacts (40) of the PDA (10) are heat staked into material of a casing (20) of the PDA (10) to provide sealing therebetween. Electrical contact between the contacts (40) of the PDA (10) and a PCB (50) contained therein is provided by a respective helical spring (46) that abuts each contact (40) and the PCB (50). This helps to maintain the contact in the event that the PDA (10) is dropped. The electrical contacts (140) of the battery pack (100) are insert moulded in casing thereof to provide sealing therebetween.

Abstract: A portable electronic device comprising a casing (5); a speaker (20) mounted adjacent an orifice (10) of the casing (5); an air permeable membrane (25) sealingly mounted to the cading (5) intermediate the orifice (10) and the speaker (20), so as to form a chamber (35) between the speaker (20) and the membrane (25); wherein the membrane (25) permits the ingress and egress of air (30), into the casing (5) through the orifice (10).

Abstract: A portable electronic device comprising a stylus for use with a touch screen of said portable electronic device; a storage portion for storing the stylus; said stylus comprising a grip at a first end of the stylus; an elongate portion connected to the grip, said elongate portion having a contacting end for engaging the touch screen of the portable electronic device; said elongate portion adapted to slide into the storage portion of the portable electronic device in order to store said stylus with said device; said portable electronic device including an engagement means for maintaining the stylus in the stored position; said engagement means including at least one resiliently deformable portion a recess, and; a projection wherein; the stylus is maintained in position through engagement of the recess and projection and released by application of force to the at least one resiliently deformable portion sufficient to deform said portion so as to effect relative movement of the projection and recess and so permit