High-density removable expansion module having I/O and second-level-removable expansion memory
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United States of America Patent
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Mar 8, 2005
Grant Date -
Mar 11, 2004
app pub date -
May 30, 2003
filing date -
May 11, 1999
priority date (Note) -
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Abstract
The utility of portable computer hosts, such as PDAs (or hand-helds), is enhanced by methods and apparatus for removable expansion cards having application specific circuitry, a second-level-removable memory, and optional I/O, in a number of illustrative embodiments. In addition to providing greater expansion utility in a compact and low profile industrial design, the present invention permits memory configuration versatility for application specific expansion cards, permitting easy user field selection and upgrades of the memory used in conjunction with the expansion card. Finally, from a system perspective, the present invention enables increased parallelism and functionality previously not available to portable computer devices.
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