用KEIL开发的操作C51单片机的IO口，使得完成对IO口的读写等操作...

upsd3200_adc.c upsd3200_lcd.c upsd3200_pwm.c upsd3200_timer.c uPSD的实用程序-upsd3200_adc.c upsd3200_lcd.c upsd3200 _pwm.c upsd3200_timer.c uPSD practical procedures!

串口上位机，用于接受下位机所传数据，实现双向控制，本软件是用于接受、控制，无线终端节点-PC serial port for the next bit plane data by mass, to achieve bi-directional control, the software is used to receive, control, wireless terminal nodes

单片机IAP编程源程序,可直接使用,适用于嵌入式系统的智能学习功能-Singlechip IAP programming source code can be used directly applicable to embedded systems intelligent learning function

基于mc68hc908qy4芯片实现超声波排障,当检测到障碍物时点亮发光二极管.-Mc68hc908qy4 chip based on the ultrasonic emission barrier, when the detected obstacle when the light emitting diodes.

密码锁 密码锁密码密码锁锁密码锁-password lock password lock password lock password lock password lock

单片机简易频率计。包含有Proteus仿真程序-Simple single-chip frequency counter. Proteus simulation program contains

看门狗的使用方法例程（C语言）-watchdog on the use routines (C language)

LCD320240,C51单片机的串口通信。-LCD320240, C51 microcontroller serial communication.

51单片机基础训练项目之会唱歌的单片机。本例使用普通有源蜂鸣器，通过控制单片机输出频率来达到“唱歌”的目的。着重训练初学者对IO管脚的认识。-51 MCU-based training program in the microcontroller will be singing. In this case the use of ordinary active buzzer, by controlling the microcontroller output frequency to achieve the " singing" objective. Focus on training for beginners to the IO pin awareness.

13.5.2单总线数字温度传感器，希望对大家有帮助-13.5.2 Single-Wire Digital Temperature Sensor, in the hope that everyone has to help