| 摘要 |
An interchangeable cover is endowed with one or more I/O ports and complementary electronics to add the one or more I/O ports to a mobile device, to which the interchangeable cover is attached. In various embodiments, the I/O ports may comprise a PS/2 mouse port, a serial port, a parallel port, a serial bus port, and so forth. In various embodiments, the complementary electronics are packaged in an ASIC with output pins similar to that of a smart card, which may include a properly equipped protocol processor for de-packaging and packaging data being inputted/outputted in accordance with selected I/O protocols. In one embodiment, the cover is U-shaped. In a wireless mobile phone embodiment, the cover is attached to a rotabable sub-section of a pivotable section.
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