| 1. | 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
文章首先介绍了本pda系统的bsp模块，而后概述了xgw平台系统，包括程序调度、内存管理和字符图形输出，重点阐述了针对本pda系统的具体应用需求，对xgw原有平台的完善，主要是软键盘输入、手写体输入、 gui图形控件的开发；同时给出本pda系统的软件结构以及难点问题的解决方法和系统中的中断处理。 |
