Railway Traffic Information System The Pda Software Design And Implementation

This paper proposes a railway traffic information system PDA' s software design and realization based on XGW software development studio. Firstly,this paper briefly describes the PDA' s BSP,and summarizes the XGW system,including program schedule , memory management characterfe graphic output, then concentrates on perfecting the XGW system for meeting with the PDA specific application requirements, including soft_keyboard input,handwriting input and GUI graphic modules.At the same time,the PDA' s software structure,the answers to problems and PDA' s interrupt process are given in details. At last,the paper depicts some principles and methods of the low_power consumption, and actual steps used in the product. The success of PDA system riches some experience for embedded system application development later.