近年來，智慧型行動裝置發展迅速，普及率也日漸提升，已經漸漸地成許多人生活不可或缺的一部分。智慧型裝置可透過應用軟體的下載，來擴充智慧型裝置的功能性，如文件管理系統、密碼管理系統以及時程管理系統等。雖然應用軟體種類繁多，但整合多項功能性的軟體系統卻是屈指可數。
本研究整合「文件管理子系統」、「密碼管理子系統」以及「聯絡人管理子系統」三種不同類型子系統，於iOS平台上開發一套應用於iPad上的個人數位助理。「文件管理子系統」採用多使用者概念所設計，結合雲端服務及專案與時程管理子系統，專案及會議可使用文件管理子系統的檔案，而使用者可透過被參考檔案來瀏覽其所在專案及會議資訊；「密碼管理子系統」透過仿真虛擬資料及AES加密來保護使用者密碼資訊內容；「聯絡人管理子系統」提供使用者管理個人通訊錄聯絡資訊，使用者可觀看聯絡人相關專案、會議及相片。本研究透過各系統間資訊分享，以提供一個多功能性的個人數位助理。

In these years, the smart mobile devices have developed rapidly and spread widely, have became a part of many people’s life. The smart mobile devices can expand the functionality by downloading the applications, such as document management system, password management system and schedule management system, etc. Although there are many kinds of applications, but the application which integrated multiple functions is a handful.
This thesis integrated three different types of subsystem, document management subsystem, password management subsystem and contact management subsystem, to develop an iPad personal digital assistant based on iOS. “Document management subsystem” uses the concept of multiuser, combined with cloud services and project and schedule management subsystem. Projects and meetings can attach files from document management subsystem, and users can browse projects or meetings information through the reference files. “Password management subsystem” protects the user password information content by using virtual information and AES encryption. “Contact management subsystem” provides the user to manage personal contact information, users can watch the contact related projects, meetings and photos. This thesis implements a multi-function personal digital assistant through information sharing between each system.

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