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Dashtop mobile
Dashtop mobile equipment refers to wireless mobile devices mounted on the vehicle dashboard. Dashtop mobile equipment (DME) includes satellite radios, GPS navigation, OnStar, mobile TV, HD radio, vehicle tracking system, MVEDR〔(IEEE 1616 MVEDR )〕 and Broadband Wireless Access (BWA) devices. Currently, the dashtop mobile devices are mostly satellite-based wireless technology. Except for OnStar and BWA devices, most of them are in the stage of passive one-way communications equipment.
However, fast-evolving mobile technology is on the threshold of turning dashtop mobile equipment into full-duplex multimedia gadgetry on the strength of fast-growing broadband infrastructure, including expanding WiMAX networks worldwide.〔(Dashtop Sprawl )〕 of electronic vehicle gadgetry, with growing indications that convergence into an all-in-one dashtop mobile device is an ultimate destination.〔("Mobile WiMAX" IEEE 802.16e-2005 )〕
==History==
Since the commercial debut of cellular phones in the early 1990s, Palm Inc took the lead in developing a generation of palmtop handheld personal computers that worked like an electronic personal organizer. Palmtops turned into Personal Digital Assistants (PDAs) with mobile phone functions.
As of 2007, PDA phones are preferred by some, due mainly to wider screens and easier texting plus mobile multimedia functions, such as audio video playback, mobile web and mobile TV. Apple's iPhone made a debut in late June 2007, featuring keypadless touchscreens with multi-touch.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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