数字音乐盒

采用STM32F103C8T6单片机采集数据，，显示在1602液晶显示屏上，通过按键更改预设的按键值达到对温度和湿度的分别控制

说明：  此程序主要是为了实现地图区域、放大等功能，使用者 可以在此基础上继续修改(The main purpose of this program is to realize the functions of map area and enlargement. Users can continue to modify it on this basis)

说明：  stm8s系列接受烟雾传感器的数据，并将其发送到OLED显示器进行显示用(Stm8s series receives the data of smoke sensor and sends it to OLED display for display)

这是一个关于计算机图的一些简单操作的程序，初次作品，谢谢支持(This is a map on the computer of some simple operating procedures, the initial entries, I would like to thank support)

说明：  STC89C52输出正弦波，DAC0804(STC89C52 output sine wave, DAC0804)

研究论文基于WEB环境与MATLAB技术的图像检索系统的实现(Research papers based on WEB technology, environment and MATLAB Image Retrieval System)

源代码操作MS5803 I2C模式，ADXL345 SPI模式的源代码，STH11温湿度传感器的源代码(MS5803 I2C mode of operation of the source code, ADXL345 SPI mode source code, STH11 temperature and humidity sensor source code)

MATLAB利用线性矩阵不等式解决控制系统的观测器设计问题并求解出了正定矩阵 (MATLAB linear matrix inequality solve observer design the control system and solved a positive definite matrix)

批量替换文件中字符串，方便修改代码中字符串和文件中字符(Replace the file in a string，Easy to modify the code and documentation for the string of characters)

说明：  STM32三菱FX3U的源码，源码是mdk4的，用mdk5打开时选第二个选项，直接编译0错误，一个警告，警告是因为一个多余的变量，亲测可用。(STM32 Mitsubishi FX3U source code, source code is mdk4, open with mdk5, select the second option, directly compile 0 error, a warning, warning is due to a redundant variable, pro test available.)