PDA System Research Based On Embedded Linux

In the age of pervasive computing with the rapid development of the present electronic technology and network technology, the embedded system has already penetrated into all fields, such as scientific research, engineering design, military technology, commerce culture art and people's daily life. At the same time, the system based on embedded linux has become the technical direction of PDA. Therefore, the great significance should be put on the research of embedded Linux PDA system.The paper firstly analyzes the PDA's definition, origin and future devolpment trend. After this, on the base of the research deeply about the embedded system, combining the deficiency in real-time character of Linux and the demand of real-time feature of PDA, the writer puts forward the percept of reforming the inner-core of Linux. The paper adopts the multilayer design thinking on the PDA system design in order to make the system development more concise and useful. At the same time, for the sake of having the handsome graphics user interface in the embedded system, the paper adopts QT as the graphics user interface. Then, the paper gives out its analysis on the theory, mechanism, design and application of QT in details as well as the main design and discussion of the network dialup of PDA.In the end, the paper introduces the points to be impoved and developed about PDA.