本文介绍了AT89C2051单片机的性能和特点，并在分析了超声波测距原理的基本系统框图。该设计系统经校正后，其测量精度可达0.1米...

P87C591的a/d 转换程序，可在keil 51下调试运行，也可将其参数修改后作为函数使用。-P87C591 the a/d conversion, in the next 51 c51 debugging operation, but also its parameters can be modified as a function use.

Easy 51Pro v2.0宇宙版Easy 51Pro v2源程序(VC)-Easy 51Pro v2.0 version of the universe Easy 51Pro v2 source (VC)

单片机中的EEPROM模块，在CVAVR中已实现。-Single-chip EEPROM in the module, in CVAVR already realize.

usb slaver for sd card

三个点温度进行监视；任意一个测温点大于设定温度报警提示-3-point temperature monitoring any point of a temperature greater than the set temperature alarm

用单片机8051控制DS18B20温度传感器，包括温度上下限的设置（可以通过串口及时设置进DS18B20），读取及时温度，当温度超过上下限报警功能。-8051 using single-chip temperature sensor DS18B20 control, including the upper and lower limits of temperature settings (through the serial port settings into timely DS18B20), read the timely temperature, when the temperature exceeds the alarm function of the upper and lower limits.

LCD模块 能够在按下一个键后 在液晶上显示相应的数据 -LCD module can press a button and the LCD display on the corresponding data

TJA1051 是一款高速CAN 收发器，是CAN 控制器和物理总 线之间的接口，为CAN 控制器提供差动发送和接收功能-TJA1051_DS_CN.pdf

Xilinx_Spartan3E开发板的常见疑难问题解答-Development board Xilinx_Spartan3E Common Troubleshooting

这是一套红外解码的软件，包括硬件电路，详细使用说明！里面针对空调的国际码的界码过程有详细的描叙.-This is a set of infrared decoder software, including hardware circuit, the detailed instructions! Air-conditioning inside the International Code for the sector has a detailed code describes the process.