在51单片机系统中实现CRC校验的方法，以及CRC校验的原理

DTMF编码芯片HT9200的51接口程序。输入参数R2表示发送数据个数，输入数据与发送数据与DTMF码的关系:00H-0 01H-1 02H-2 03H-3 04H-4 05H-5 06H-6 07H-7 08H-8 09H-9 0AH-A 0BH-B 0CH-C 0DH-D 0EH-* 0FH-#。详细说明参考文件内-DTMF encoder chip HT9200 51 interface program. R2 said input parameters to send data distribution, data entry and send data with the DTMF code : 00H-0 01H- 02H-2 Mr- 3 in the 04H-4 05H-5 06H-6 07H-7 08H-8 7-9 0AH-A 0BH- 0CH B-C 0DH-D 0EH-* 0FH-#. Detailed information paper

通过DS18B20读取温度（范围-55C~125C，精确到小数点后一位），通过4位数码管显示出来。 当温度为正且百位为零时，不显示，当温度为负时百位显负号。当温度百位和十位都为0时0都不显示。-Read through the DS18B20 temperature (range-55C ~ 125C, accurate to one decimal), through four digital tube display. When the temperature is zero and 100, do not show, when the temperature is significantly negative at minus 100. When the temperature is 100 and 10 are not displayed 0:00.

该算法为基于PD增益自适应调节的PID控制 用MATlab开发，能够管直接运行-The algorithm for the adaptive gain based on the PD of the PID control Matlab development, be able to pipe directly to run

Keil C 编程的手写板-Keil C Programming 5270

模拟示波器，能用于学生在学习初级ＶＢ上有简单的了解-Analog oscilloscope can be used for elementary students in learning VB have a simple understanding of

MSP430编程工具，可以编程，也可回读，程序很小，非常实用。-MSP430 programming tools, can be programmed can be read-back, the program is very small, very useful.

51单片机Keil C延时程序的简单研究-51 SCM Keil C Delay simple procedure study

SANYO LC72131D+ LA1823，通用的车载收音头源程序。-SANYO LC72131D+ LA1823, GM car radio the first source.

TDK 6521 SOC 芯片 DEMO程序，由TDK 公司提供，可直接使用。开发平台keil c51。-TDK 6521 SOC chip DEMO procedures provided by the TDK Corporation, can be used directly. Development platform keil c51.

矢量变频器控制源程序-vector converter control program