ACurrent-ModePowerSigmaDelta

无符号四字节运算,只是子程序，可直接复制到程序里，然后调用。无符号双字节运算。(Unsigned four byte operation, only the subroutine, can be directly copied into the program, and then call. Unsigned byte operations.)

说明：  DSP上电锁死，解锁文件，用于DSP自锁解锁！(DSP power-on lock, unlock files, for DSP self-lock unlock!)

实验班上电时，数码管不显示，顺序按下矩阵键盘后，数码管上依次显示0~F，六个数码管同时静态显示即可。(Experimental class power, the digital tube does not show the order of matrix keyboard is pressed, the digital tube followed by 0 to F, six digital tube and static display can.)

嵌入式单片机开发，stm32系统移植，实现计算功能(Embedded microcontroller development, stm32 transplant system, to achieve computing capabilities)

LCD1602显示的液晶密码锁，第一行显示显示固定密码，第二行显示输入密码，密码输入完毕后会有正确或者错误提示,为了演示方便，提示密码，输入密码部分也没有用星号代替。可以自行更换成星号。(The LCD1602 display LCD password lock, the first line shows the the display fixed password, and the second line enter the password after password input will be correct or error, and to demonstrate the convenience, prompting the password, enter the password part is not replaced with asterisks. Replaceable asterisk.)

指纹光学传感器模块通信子程序////////(Optical fingerprint sensor module communication subroutines)

说明：  该程序为大家提供按键扫描程序例程。给大家一个参考，来实现简单的按键扫描功能(This program provides you with the routine of key scan program. To give you a reference, to achieve a simple key scan function)

实现在STM32F407上驱动ADS1115的代码(Implement the code that drives ADS1115 on STM32F407)

绪论，介绍了温度控制的发展趋势，发展现状，以及PID控制的相关介绍(the introduction of an article)

采用单片机C语言编程，控制矩阵键盘，实现动态扫描心得(matrix keyboard control)