AT89C2051单片机与PC机的RS232通讯接口子程序，实现管理科学。

对51单片机的介绍，是菜鸟级入门的好资料，能让学生更好的学习-SCM 51, the rookie is a good entry-level information that allows students to better learning

ATmega单片机开发CAN总线程序，有用！-ATmega MCU development of CAN-bus program, useful!

超声波倒车雷达应用方案，配合硬件电路一起使用-Ultrasonic reversing radar applications, used in conjunction with the hardware circuit

这个是实时时钟芯片DS1302的驱动程序，采用c51编写，编程时只需要修改一下SCL,IO,RST的引脚定义即可，经过测试，完全好用-This is a real-time clock chip DS1302 driver, using C51 preparation, programming, only need to modify about SCL, IO, RST pin can be defined, tested and fully use

CPLD与51单片机总线接 -CPLD with 51 microcontroller bus access

OPENGMAX，大家可能都用到过，这里可以和大家分享一些优化的代码，可以共同提高，ARMcode 优化-OPENGMAX, you may have used before, here we can share some optimized code, can work together to improve, ARMcode optimization

这是一个比较典型的PID处理程序，在使用单片机作为控制cpu时，请稍作简化，具体的PID 参数必须由具体对象通过实验确定。由于单片机的处理速度和ram资源的限制，一般不采用浮点数运算，而将所有参数全部用整数，运算 到最后再除以一个2的N次方数据（相当于移位），作类似定点数运算，可大大提高运算速度，根据控制精度的不同要求，当精度要求很 高时，注意保留移位引起的“余数”，做好余数补偿。这个程序只是一般常用pid算法的基本架构，没有包含输入输出处理部分。-This is a typical PID process, as in the use of SCM control cpu, please slightly simplified, specific PID parameters to be specific targets identified by experiments. As SCM processing speed and ram resource constraints, generally do not use floating-point operations, and will use all the parameters of all integers, and the final calculations to divide one of the Nth 2 data (the equivalent displacement), will count for a similar operation, it will greatly increase the computing speed, control Accuracy of different requirements and high precision, displacement caused reservations to the attention of the "I", which I do several compensation. This procedure is commonly used algorithm pid the basic structure does not include input and output processing.

16位单片机xc164用于QH2001显示。-16 Singlechip XC164 for QH2001 show.

51单片机实用子程序 里面有很多单字节,多字节和定点浮点数的运算子程序,初学者可以看,还不错我也是从其它网上找的. -51 SCM utility subroutine There are so many single-byte, multibyte, and fixed-point floating-point arithmetic subroutines, beginners can look, well I am also looking for from the other online.

单片机控制ic卡的源程序，给需要者，已经通过测试