| Embedded system is widely used in network communications, personal data processing, online transaction processing, industrial control and automotive electronics, communication and household consumer electronic products. The thesis is based on the tenth five-year plan of scientific and technological project--research and product development of wireless network technology based on the logistics of collecting and processing information technology.Given an overview of the key embedded system technology--hardware, operating systems, graphic user interface, programming languages and development tools, the thesis compares different operating systems and graphic user interfaces which are used in embedded systems worldwide. And a handheld wireless system is designed and implemented which chooses embedded Linux as the operating system, Qt/embedded and Qtopia as the graphic user interface. In addition, the input device driver implementation, embedded Linux kernel customization, Qt/Embedded customization, Qtopia optimization and internationalization and application implementation are discussed.The testing proves that all the functional parts work well, satisfying the field of logistics management application, which helps improving logistics management for timeliness and accuracy.A summary is given at last, which puts forward the successive destination is reducing the memory space and storage space of the software system occupied. |
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