智能型掌上电脑（PDA）的研究与开发
摘要
PDA是Personal Digital Assistant的缩写，字面意思是“个人数字助理”，即通常所说的
掌上电脑。近几年有关PDA的技术飞速发展，这种手持设备集中了计算、电话、传真和网
络等多种功能。它不仅可用来管理个人信息（如通讯录，计划等），更重要的是可以上网浏
览，收发Email，发传真，甚至还可以当作手机来用。尤为重要的是，这些功能都可以通过
无线方式实现。当然，并不是任何PDA都具备以上所有功能。即使具备，也可能由于缺乏
相应的服务而不能实现。但可以预见，PDA发展的趋势和潮流就是计算、通信、网络、存
储、娱乐、电子商务等多功能的融合。
本文介绍了PDA的发展历程，着重探讨PDA当今的技术热点及今后的发展方向，再详
细介绍作者所参与开发的一款智能型掌上电脑，包括其硬件电路和软件设计总体思路，以及
部分具体电路设计和软件流程。围绕实现简单、成本低廉、回报丰厚的宗旨，对硬件电路的
芯片选型及其具体特性作了详细介绍，并特别介绍了独创的快捷键电路设计和软件扫描流
程、CPU模块的内部特性和端口分配、电源供电模块的具体参数特性。基于PPSM开发的
应用软件和系统管理软件具有效率高、占用存储器资源少、较易升级的特点。桌面软件和通
讯软件以及自定义的通讯协议在本文中都有重点介绍。
SUBJECT SPECIALITY: Automation theory and engineering
THESIS TITLE: The Research and Development of One Kind of Intelligent PDA (Personal Digital Assistant)
MASTER: Haibo Lu TUTOR: Professor Bingchao Lv
PDA is the abbreviation of Personal Digital Assistant. We usually call it as “Palm Computer” Recently the technology about PDA has been developing rapidly. Such kind of hand-held equipment includes a lot of functions such as computing, fax, network and so on. They can be used as not only personal message managers, but also Internet browsers through whom faxes and e-mails can be sent out or received. Above all, these functions are achieved by wireless modes. Of course, not all PDAs have these functions above-mentioned. Even if they possess them, maybe these functions cannot be realized because lack of the corresponding services. But we can anticipate PDA’s developing tide and trend is the blend of computing, communication, network, store, entertainment and electric commerce functions
This paper includes PDA’s developing career, some current technology focuses and it’s developing direction, and then particularly contains the total design thought about the intelligent PDA whose development the author took a part in, which includes some hardware circuits and software procedures.
掌上电脑。近几年有关PDA的技术飞速发展，这种手持设备集中了计算、电话、传真和网
络等多种功能。它不仅可用来管理个人信息（如通讯录，计划等），更重要的是可以上网浏
览，收发Email，发传真，甚至还可以当作手机来用。尤为重要的是，这些功能都可以通过
无线方式实现。当然，并不是任何PDA都具备以上所有功能。即使具备，也可能由于缺乏
相应的服务而不能实现。但可以预见，PDA发展的趋势和潮流就是计算、通信、网络、存
储、娱乐、电子商务等多功能的融合。
本文介绍了PDA的发展历程，着重探讨PDA当今的技术热点及今后的发展方向，再详
细介绍作者所参与开发的一款智能型掌上电脑，包括其硬件电路和软件设计总体思路，以及
部分具体电路设计和软件流程。围绕实现简单、成本低廉、回报丰厚的宗旨，对硬件电路的
芯片选型及其具体特性作了详细介绍，并特别介绍了独创的快捷键电路设计和软件扫描流
程、CPU模块的内部特性和端口分配、电源供电模块的具体参数特性。基于PPSM开发的
应用软件和系统管理软件具有效率高、占用存储器资源少、较易升级的特点。桌面软件和通
讯软件以及自定义的通讯协议在本文中都有重点介绍。
SUBJECT SPECIALITY: Automation theory and engineering
THESIS TITLE: The Research and Development of One Kind of Intelligent PDA (Personal Digital Assistant)
MASTER: Haibo Lu TUTOR: Professor Bingchao Lv
PDA is the abbreviation of Personal Digital Assistant. We usually call it as “Palm Computer” Recently the technology about PDA has been developing rapidly. Such kind of hand-held equipment includes a lot of functions such as computing, fax, network and so on. They can be used as not only personal message managers, but also Internet browsers through whom faxes and e-mails can be sent out or received. Above all, these functions are achieved by wireless modes. Of course, not all PDAs have these functions above-mentioned. Even if they possess them, maybe these functions cannot be realized because lack of the corresponding services. But we can anticipate PDA’s developing tide and trend is the blend of computing, communication, network, store, entertainment and electric commerce functions
This paper includes PDA’s developing career, some current technology focuses and it’s developing direction, and then particularly contains the total design thought about the intelligent PDA whose development the author took a part in, which includes some hardware circuits and software procedures.
引文
1． 王爱英 《程序员、高级程序员级硬件知识》清华大学出版社1992． 4
2． 俸远祯，阎慧娟 《计算机组成原理》 电子工业出版社
3． 周明德 《微机原理及应用》清华大学出版社 1993． 2
4． 杨荫彪，穆云书 《特种半导体器件及应用》 西安电子科技大学出版社
5． 刚寒冰，齐秋群 《M68HC05原理与应用大全》 北京理工大学出版社
6． 陈章龙，韩光 《MOTOROLA单片机接口技术手册》复旦大学出版社
7． 潘全贵，沈默君等 《TURBO C程序设计技术》南京大学出版社
8． MOTOROLA ANALOG DEVICE DATA
9． MAXIM ANALOG DATA SHEET
10． ATMEL PRODUCTS DATA BOOK
11． 《M68EZ328 ADS User's Manual V1． 1． 》
12． 《MC68EZ328用户手册》
13． 《PPSM OS用户手册》
14． www.prladaily.com
15． www.waterwnod.com
16． www.intel.cnm
17． www.maxim.com
18． www.hp.cnm
2． 俸远祯，阎慧娟 《计算机组成原理》 电子工业出版社
3． 周明德 《微机原理及应用》清华大学出版社 1993． 2
4． 杨荫彪，穆云书 《特种半导体器件及应用》 西安电子科技大学出版社
5． 刚寒冰，齐秋群 《M68HC05原理与应用大全》 北京理工大学出版社
6． 陈章龙，韩光 《MOTOROLA单片机接口技术手册》复旦大学出版社
7． 潘全贵，沈默君等 《TURBO C程序设计技术》南京大学出版社
8． MOTOROLA ANALOG DEVICE DATA
9． MAXIM ANALOG DATA SHEET
10． ATMEL PRODUCTS DATA BOOK
11． 《M68EZ328 ADS User's Manual V1． 1． 》
12． 《MC68EZ328用户手册》
13． 《PPSM OS用户手册》
14． www.prladaily.com
15． www.waterwnod.com
16． www.intel.cnm
17． www.maxim.com
18． www.hp.cnm