NETMobileApplicationDevelopmentTheChallengeofMobility详解.pptVIP

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NETMobileApplicationDevelopmentTheChallengeofMobility详解.ppt

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.NET Mobile Application DevelopmentThe Challenge of Mobility Introduction Many mobile applications are clients in larger distributed systems In the last session we considered Characteristics of distributed applications In this session we will look at Mobile devices Mobile devices as clients in distributed applications Particular challenges of mobile devices The Mobile Revolution Computers no longer tied to the desktop Devices are increasingly mobile and wirelessly enabled Personal Digital Assistants (PDA’s) Mobile phones Smart phones Mobile device usage is common 75% of UK population own a mobile phone Mobile devices will increasingly be used as clients in distributed applications Developers must address peculiar mobile device characteristics Pervasive Computing A vision of 21st Century computing Available any time, any place, in any device Pervasive computing ‘computing power freed from the desktop – embedded in wireless handheld devices, automobiles, home appliances and commercial tools-of-the-trade. In the enterprise it extends timely business data to workers in the field… In our personal lives, it expands our freedom to exchange information anytime, anywhere’ IBM Devices are becoming more mobile more embedded casually connected to a ubiquitous network with wired core and wireless edges Visions of Pervasive Computing Users are predominantly mobile Computing is mobile and wirelessly connected Unmanaged, dynamic network environment Devices/appliances containing embedded computing are clients in this distributed environment Business domain / distributed wireless office is an ultimate goal Mobile phones, PDA’s, laptops, corporate servers seamlessly integrated in wireless network environment Workers can access info and resources needed to do their job regardless of their location Mobile Devices Many different mobile devices Laptops/Tablet PC’s Essentially same as standard desktop PC’s Personal Digital Assistant’s Pocket-sized handheld computer with Calendar,