基于89S51单片机，实现正统，方波和三角波的输出

采用高发射功率红外光电二极管和高灵敏度光电晶体管组成。 光缝宽度（分辨率）有0.8mm、0.4mm两种。-High transmit power infrared photodiode and high-sensitivity phototransistor. Optical slit width (resolution) of 0.8mm, 0.4mm two kinds.

温度传感器AD7416C程序（能帮你了解I2C原理，及函数的使用）-AD7416C temperature sensor (I2C can help you understand the principles, and the use of function)

DEW POINT CALCULATION ROUTINE

头件的中的#ifndef，这是一个很关键的东西。比如你有两个C文件，这两个C文件都include了同一个头文件。而编译时，这两个C文件要一同编译成一个可运行文件，于是问题来了-The first pieces of# Ifndef, this is a very key things. For example, you have two C file, the two C files include the same file size. And compile-time, the two C files to compile together into a run file, then issue the

s1d13716的源码 windiws ce 或8位单片机-s1d13716 the source windiws ce or 8-bit MCU

用单片机实现E1等芯片的初始化，给出了E1芯片DS21Q53的初始化方法-E1 MCU chip initialization, given the DS21Q53 E1 chip initialization method

gm8123串口扩展开发程序，适合初学者。-gm8123 serial port expansion development process, suitable for beginners.

液晶显示器LCD1602的驱动。适合于51单片机系统。-LCD1602 LCD driver. Suitable for single-chip microcomputer system 51.

单片机演奏乐曲的程序，可以演奏生日快乐和三套车。-Singlechip music recital program, you can play happy birthday and the troika.

利用单片机、HD7279、键盘，实现计时器、倒计时器。-The use of single-chip, HD7279, keyboard, realize the timer countdown device.