15_3_3

说明：  giai ma DTMF bat so dien thoai goi den bang ic chuyen dung.

开机的时候先检测 24C02 是否存在，然后在主循环里面检测两个按键，其中 1 个按键（KEY1） 用来执行写入 24C02 的操作，另外一个按键（KEY0） 用来执行读出操作，在 TFTLCD 模块上显示相关信息。同时用 DS0 提示程序正在运行。(When booting, it first detects the existence of 24C02, and then detects two keys in the main loop. One key (KEY1) is used to write 24C02, and the other key (KEY0) is used to read out, displaying relevant information on the TFTLCD module. At the same time, the DS0 prompt program is running.)

This document explains very quick how high speed circuits can be simulated by FDTD numerical electromagnetic model.

上位机通信-配合XTMonitor显示温度等(PC communication- with XTMonitor display temperature, etc.)

搭建onvif设备端代码 非常有用，可以配合ONVIF Device Manager测试(Device-side code to build onvif)

51单片机简单进行测试是否正常测试内容为LED灯等(51 single simple test whether the normal test content for the LED lights)

测量USB电压电流，5秒轮流显示，数字接近5V的为电压，另外一个为电流(Measurement of USB voltage and current, 5 second rotation display)

用于四轴飞行器的海盗飞控源代码。硬件基于Arduino MEGA2560。(Pirates for four-axis aircraft fly control source code. The hardware is based on Arduino MEGA2560.)

利用单片机（STC89C52）为核心结合机械按键、数码管以及稳压器件等电子元器件组装了一个数字时钟，可以实现精准的计时以及修改等功能；(The combination of mechanical buttons, digital tube, and electronic regulator device the microcontroller (STC89C52) as the core components assembled a digital clock, and can achieve precise timing and modify functions )

基于STM32F407实现俄罗斯方块基本功能(Based on STM32F407 realizes Russia square basic function)