The traffic light is timed and lets cars pass during a specific time period. T...

P89C669存储实例: 说明： 1. inc 文件夹 是关于P89C669的头文件，在使用下面两个例子前，请首先将头文件拷到 ..KeilC51INC下. 2. Rom 文件夹 是关于P89C669的程序空间使用的例子，说明怎样利用大于64KB的程序空间。 3. Ram 文件夹 是关于P89C669的数据空间使用的例子，说明怎样在各个数据空间定义变量。 -P89C669 storage examples: Note: 1. Inc folder is on the first P89C669 documents, in the use of the following two examples, please first Kaodao header files .. KeilC51INC under .2. Rom folder P89C669 procedures on space use example of how to make use of the procedure is greater than 64KB of space. 3. Ram folder P89C669 data on space use examples to illustrate how the definition of data space in all variables.

nRF905开发，欢迎参考，演示了用905实现调频设计，程序用C51编写，特别具有可读性，

51单片机红外接受和发射,利用51单片机的串口通信。发射也是通过串口发射。-51 Single-chip infrared accept the use of 51 Single-chip serial communication. Launch is fired through the serial port.

这是一个红外报警系统，该系统通过555调制红个发光管，发出38KHZ的红外信号，对面使用一个红外接收头接收信号用来检测是否有人通过，如果有，则声光报警，-This is an infrared alarm system, which modulator 555 through a red light-emitting tube, issued 38KHZ IR signal, opposite to the first use of an infrared receiver to receive signals to detect whether or not it was passed, if so, make a sound light alarm,

16键盘程序，按任何一个键都可以返回相应的键值，可以下载，绝对好用！-16 keyboard procedures, any key that one can return to the corresponding keys, can be downloaded for absolutely everything!

使用PROTEUS仿真的智能温度计,使用DS18B20测温,C编写-PROTEUS simulation using intelligent thermometer, use DS18B20 temperature, C prepared

C8051F020串口通信例程-C8051F020 serial communication routines

摩托罗拉单片机延时程序举例，无密码，解压即可使用--Programming examples for time delay in Motorola s SCM.

AT24C256是ATMEL公司256kbit串行电可擦的可编程只读存储器，8引脚双排直插式封装，具有结构紧凑、存储容量大等特点，可以在2线总线上并接4片该IC，特别适用于具有高容量数据储存要求的数据采集系统。本文将介绍该IC的工作原理和与单片机的软硬件接口。-ATMEL Corporation AT24C256 is 256kbit serial electrical erasable programmable read-only memory, 8-pin double-line package, has a compact structure, characterized by large storage capacity can be 2-wire bus, and then 4 the IC, is especially suitable for high-capacity data storage requirements of the Data Acquisition System. This article will introduce the working principle of the IC and single-chip hardware and software interface.

红外线IR在单片机中的应用及原理-infrared IR in SCM Application of Principle and