*功能：运行WDT，D1和控制数码管显示。体育的开始。

51单片机实现数字时钟带闹钟 使用6个弹跳按钳和4个共阴七段显示器组合而成-51 MCU digital clock with alarm

基于凌阳单片机SPE061A的超声波测距程序，具有短距离测距，中距离测距和可调距离测距等三种功能，运用凌阳大学计划所提供的开发板，可以很容易实现障碍物距离的检测-Based on Sunplus SPE061A Singlechip Ultrasonic Ranging procedure, with short-distance ranging, ranging in distance from the rangefinder and adjustable three functions, the use of Sunplus University plans provided by a development board, can easily realize the obstacles Detection of objects distance

在做项目（工程）的时候，我们经常要用到比较多的按键，而且IO 资源紧张， 于是我们就想方设法地在别的模块中节省IO 口，好不容易挤出一两个IO 口，却 发现仍然不够用，实在没办法了就添加一个IC 来扫键。一个IC 虽然价格不高， 但对于大批量生产而且产品利润低的厂家来说，这是一笔不菲的开支! 那，我们能不能想到比较好的扫键方法：用最少的IO 口，扫最多的键？可以吗？-Doing the project (engineering), we often use the relatively large number of keys, and the IO resource constraints, so we are trying to save in another module IO ports, finally out of one or two IO ports, only to find is still not enough there is really no other way to add an IC to sweep on the keys. Although the price of an IC is not high, but low profits, high-volume production and product manufacturers, this is spending a lot of money! That, we can not think of a better scan key method: with a minimum of IO ports, scan Most of the keys? OK?

80C51单片机中字符型液晶1602显示实验的源程序，里面包含了1602的datasheet。-80C51 MCU 1602 character LCD display source experiments, which contains the 1602

功能： 1、作为下位机采集8255数据并将此数据通过通讯送出，传输十路 2、采集数据为BCD，不处理后 3、通讯采用方式一-Features: 1, as under the 8255-bit machine data collection and data communications sent through the transmission path 2, 10, collecting data for the BCD, not after 3, means of communication using a

风机控制器智能程序4,请大家自己使用,千万不外传!-Intelligent fan controller program 4, let us own use, do not Gaiden!

8051F330 pid ad舵机模拟串口数码显示-8051F330 pid adservo scidispaly

此程序为单片机开发过程中的串口通信演示程序。用 汇编编写，供参考。-procedure for microcontroller development process of serial communications demonstration program. Using a compilation prepared for reference.

One study shows that Americans prefer to answer with a brief

单片机并口扩展芯片8255A源码，内服仿真文件和说明文件-Single-chip parallel port expansion 8255A chip source, internal simulation files and documentation