webrtc_vad

课程实验的一个小程序，可统计鼠标左右键的单击次数(course of a small experimental procedures, key statistics about the mouse click frequency)

电力系统电度表通讯协议，主要针对DL645协议标准(Power system meter communication protocol, mainly for DL645 protocol standards)

4X4点阵键盘+1602液晶显示做的计算器（AVR单片机）(4X4 matrix keyboard 1602 LCD calculator to do (AVR microcontroller))

实现用单片机控制直流电机调速功能，可用，有hex文件(Achieve MCU control DC motor speed control function is available, a hex file)

说明：  zigbee document upload 23/7/2019

可以产生幅度、频率可调的方波，频率50hz到1M(Can produce the amplitude, frequency adjustable Fang Bo, frequency of 50Hz to 1M)

at89c51snd1单片机SCMM的mp3播放程序源码 (SCMM at89c51snd1 microcontroller mp3 player source code)

STM8S系列单单片机教程，第三课，教你从零开始学会使用蜂鸣器，让蜂鸣器唱歌吧(STM8S series single chip tutorial, the third lesson, teach you from scratch to learn to use the buzzer beeper to sing)

fluent物性随温度变化的udf（包括导热和比热）；边界条件温度随时间变化的udf。(fluent physical properties with temperature changes udf (including thermal conductivity and specific heat) temperature boundary conditions change over time udf.)

无线通讯nrf905，很适合初学者来学习，里边包括了对射频寄存器的设置什么的(Wireless communication nrf905, it is suitable for beginners to learn, inside contains the settings for RF registers what)