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?????????????????????????????????????????????????г?????й??г???????????????????????????????????????????г???????????????????????????????г??????????????????????????????????г???????????Ρ?

???????????????????????????PalmOS??Symbian??Windows CE??Linux?????

???????????

????Palm OS??????

????Palm OS????????Palm??????п?????????????Handspring????????????豸??????????????????????PDA?????????

????Palm OS??PDA?г??????????λ??Palm?????????????????????????????????????????????Handspring??????????????????????

????Symbian??

????Symbian??????????????????32λ???????????й????????????????????????????????豸????????????????????????GPRS???????SyncML?????3G????????????????????????????????????κ????????????Symbian???豸????????????????????????Symbian??????豸????ü??????????????????????????????漼?????????????????????????????????????????????????????????????????????棬????????????????????????????????????symbian??????????????????????????java?????????????????????С????????????????Щ????????????????

??????Symbian?????Σ?????????????????????Crystal??Pearl??Quarz??????????????????г??????????????????????????????????????????????????????Symabian?????????2000?????е?????????????????????????????????????????????2001?????е??????9210??????????Crystal???????????2002????????????7650??3650????Symbian Pearl?????????????7650?????????2.5G?????????????????????????Symbian??6.0?汾???????????????????????????Symbian??Pearl??????汾????????7.0??????3G?????????????????????????????????????????????Symbian??6.0?汾?????????洢?豸????MMC??CF??????????????????????????????????????????????????????????y??????????????

????Windows CE??

????Windows CE?????? Pocket PC??Smartphone????????????PDA????????????????ж??????IT????????????????????????

????Pocket PC 2002 ????????????????Phone Edition???綽?汾??????????????????686?????????????????????????????????????????檔?????????????????2002??????????????????????????SmartPhone2002????symbian Pearl???????????????豸??????????

????????????????????????????????????????????????????????????????????????????г?????????????

????Linux??

????Linux??????????????????????????????к??汾???С?????δ????????????