C51串口扩展5个源代码，可以弥补51单片机串口不足的缺点，

用单片机 AVR mega48 和 tinny13做的 AVRCDC-With MCU AVR mega48 and tinny13 do AVRCDC

320240液晶的程序 430f149调试通过-320240 LCD 430f149 debug procedures through

ok very good os

陵阳61单片机的计数测速程序， 按照双叶螺旋桨遮光计算，外部中断触发，SPI-led显示，定时器控制0.5秒更新，基于unSp IDE 2.0-61 Singlechip陵阳count velocimetry procedures, in accordance with the propeller futaba shading, the external interrupt trigger, SPI-led shows that 0.5 seconds timer control to update, based on the unSp IDE 2.0

采用MPLAB开发，计算球面坐标到高斯坐标的投影，经度小于1m-Using MPLAB development, calculation of spherical coordinates to Gaussian projection coordinates, longitude less than 1m

基于超声波的测距仪（包括原理图，程序源码与相关调试说明，以及一些参考资料，总之，开发超声波测距仪的一整套资料）-Based on Ultrasonic Range Finder (including schematics, source code and related procedures for debugging instructions, and some reference materials, in short, develop a set of ultrasonic range finder data)

LCD 128*64 的驱动软件 和适合学习的人 带全部解释-LCD 128* 64 for the driver software and learn with all the explanation

针对音量IC：M61540的控制程序，适合5.1音响系统。-For volume IC: M61540 control procedures, suitable for 5.1 sound system.

该文件是采用通用IO口模拟I2C存储器通讯的,24LC256是低电压I2CEEPROM.-this document is to adopt a common IO memory simulation I2C communications, 24LC256 is low voltage I2CEEPROM.

中央空调控制器全套资料，包含所有开发文档，喜欢的请速度！-A full set of information on central air-conditioning controller, including all development documents, like the speed please!