PDA模块的开发

The development of PDA module

PDA30 0 0 (PersonalDigitalAssistant )是一个嵌入式产品 ,又称个人数字信息助理 ,方便人们的生活、商务应用。选用了Motorola公司的DragonBallEZ32 8微处理器。在熟悉了该处理器的功能特性以及模块控制的基础上 ,选择合适的元件进行连接。实现了内存的访问 ,模数转换芯片的控制 ,键盘、触摸屏的输入 。

PDA3000 (Personal Digital Assistant) is an embedded system product. It makes people's life and business affairs easy. The Motorola's DragonBall EZ328 microprocessor is chosen. After understanding the fundamental properties and functions as well as the control complements of the microprocessor, the proper element is selected to be connected. The fundamental functions of PDA such as communication with the memory, the control of A/D transform, the input function of the keyboard and touch screen, the output function of the liquid crystal display are realized.