I目录摘要............................................................................IVABSTRACT.........................................................................51、绪论..........................................................................61.1 课题的背景...............................................................61.2 病床呼叫发展状况.........................................................61.3 研究的主要内容...........................................................62、总体方案设计..................................................................73、芯片资料简介..................................................................83.1 无线收发模块.............................................................83.1.1nRF24L01 概述.......................................................83.1.2 引脚功能及描述....................................................83.1.3 工作模式..........................................................93.1.4 工作原理.........................................................103.1.5 配置字...........................................................113.2LCD1602 液晶显示模块.................................................123.2.1LCD1602 的特性及使用说明...........................................123.3 STC89C52 单片机简介.....................................................153.3.1 单片机的引脚功能描述..............................................154、硬件系统的设计...............................................................174.1 硬件系统设计总体方案....................................................174.2 单片机最小系统..........................................................184.3 单片机的时钟电路与复位电路设计..........................................194.4 液晶显示模块............................................................194.5 按键模块电路............................................................204.6 电源模块................................................................204.8 无线传输模块....................
