ip28-berr

说明：  C51入门教程 代码 含编译文件 第3章 (C51 Getting Started Tutorial to compile the file containing the code in Chapter 3)

Abaqus变摩擦子程序UFric和模型文件(Abaqus subroutine UFric of changing friction and model file)

基于51单片机开发板的一些常用子程序（汇编）(Some common subroutines based on 51 MCU development board (compilation))

说明：  红外线程序（使用C语言编写）（使用定时器作为解码）(红外线程序（使用C语言编写）)

此代码为在proteus中仿真代码，实现功能：利用液晶显示时间，通过按键调节时分秒。(This code is a simulation code in proteus. It realizes the function of adjusting the time and seconds by keystrokes using liquid crystal display time.)

stc15f104e按钮检测例子，内附电路图和代码 (stc15f104e button detection examples)

该防盗系统使用热释电红外传感器作为人体探测模块，并将防盗系统设计为两个用户可选择的模式：在家模式和离家模式，当处于在家模式时，如果传感器检测到有人进入监控范围，则自动响起门铃提醒用户有访客，就不会发生误把访客当作盗贼的报警事件了；当处于离家模式时，如果传感器检测到有人进入检测范围，则开启声光报警模块进行报警。同时，该系统为密码控制系统，用户通过输入正确密码才可改变模式和解除警报，这也增强了该系统使用的可靠性。(The anti-theft system using pyroelectric infrared sensor as the detection module, and alarm system design for the two user selectable mode: home mode and home mode, when in the home mode, if the sensor detects a person into the monitoring range, will automatically alert the user to a visitor rang the doorbell, will not happen take the visitor as an alarm event of thieves; when in the home mode, if the sensor detects a person into the detection range, open alarm alarm module. At the same time, the system is a password control system that allows users to change their mode and lift their alarms by typing in the correct password, which increases the reliability of the system.)

说明：  keil c51 单片机开发软件，，内含破解补丁(Development software of Keil C51 single chip microcomputer, including crack patch)

通过GPIO口，模拟I2C协议，和设备进行I2C通信(I2C communications via GPIO ports, analog I2C protocol, and equipment)

说明：  51单片机的拼音输入法的程序，用C实现，(51 SCM Pinyin input method to the procedures used to achieve C,)