摘要： 分析了现有汉字输入模型应用在手持设备时存在的缺点，提出了一个能适用于各种手持设备的汉字通用输入模型。该模型由通用引擎接口层、通用输入流处理层与通用数据处理接口层组成，其框架采用面向对象技术设计，能支持多种手持设备操作系统，并具有良好的通用性、透明性和可扩展性；介绍了模型各个层的功能以及具体的设计技术；说明了模型中各层之间的协作关系。

关键词: 汉字输入, 输入模型, 手持设备, 层次结构

Abstract: This paper provides a Chinese universal input model which can fit almost all kinds of handheld devices. That input model consists of three layers including universal engineering interface layer, universal input stream processing layer and universal data processing layer, and the structure of that model adopts the technique of object-oriented programming. It can be supported by many kinds of OS used in handheld devices, so it is designed to be universal, transparent and expansible. It also introduces each layer of that model and the design technology of each layer, describes the collaborating relationship between all the layers.

Key words: Chinese characters input, Input model, Handheld devices, Hierarchy