单片机数字显示程序,含头文件,说明,本人亲自试过.-Single-chip digital display program, including the first document, I personally tried.

RS485 MODBUS C51程序(EE21学习板演示程序) -RS485 MODBUS C51 program (EE21 learning demo board)

avr单片机，对目标板的编程，测试显示灯，发送串口返回值-avr microcontroller, the target board programming, testing lights, sending serial return values

pid的一个例程设计程序，希望对大家有用！-pid a routine design process, in the hope that useful to everybody!

自动交通管理系统 用红、绿、黄三支共两组发光二极管表示交通信号灯，利用单片机模拟有时间显示的定时交通信号灯控制管理。信号灯的变化规律可如下： 1）放行线：绿灯亮放行25秒，黄灯亮警告5秒，然后红灯亮禁止。 2）禁止线：红灯亮禁止30秒，然后绿灯亮放行。 3）当某一方向的红灯亮时，若该方向有车通过，则用扬声器声报警。（撞红灯信号可用3-5V模拟量表示） 同时用2位数码管进行30秒钟递减时间显示。-automatic traffic management system using red, green, yellow a total of three light-emitting diodes, said two traffic lights, using SCM time simulation shows the regular traffic signal control. Signal changes in the law to be as follows : 1) Release Line : green clearance 25 seconds, bright yellow warning five seconds, and then the red-ban. 2) prohibit the lines : red-Ban 30 seconds, then green clearance. 3) When the red light in one direction- that if the direction of a car passed, the use of loudspeakers sound alarm. (Red light signals can hit 3- 5V analog said), while using two digital tube for 30 seconds decreasing time displayed.

DS18b20d的c51程序的若干个函数 包括： //延时子程序//读温度//DS18B20初始化程序//读一个字节//写一个字节//键盘扫描程序//主程序-DS18b20d the C51 process a number of functions including:// Delay subprogram// read temperature// DS18B20 initialization procedure// read one byte// write one byte// keyboard scanner// main program

用8051控制DDS信号发生器，产生1HZ-10MHz的正弦波/三角波/方波-DDS with 8051 control signal generator, producing the 1HZ-10MHz sine/triangle/square wave

基于并口的SPI总线93CXX的读写程序-This is a programm for SPI chip 93cxx in use of parral port

本模拟I2C软件包包含了I2C操作的底层子程序，使用前要定义好SCL和SDA。在标准8051模式(12 Clock)下,对主频要求是不高于12MHz-The simulation package includes I2C bottom I2C operation subroutine, before the definition of a good use of SCL and SDA. 8051 in standard mode (12 Clock), the requirements for the frequency is higher than 12MHz

研华PCL841 CAN总线通信程序例程,1Mbps双CAN通信-Advantech PCL841 CAN bus communication procedures routines, 1Mbps-CAN communication