KEY_TEST

这是一个气体传感器的元件封装库，型号为mq-135，使用dxp开发。(This is a gas sensor element package repository, model mq-135, using dxp development.)

高精度电压表(24bit) VB源程序,简单修改可实现多量程(precision voltage (24bit) VB program, a simple change can be realized more range)

基于PLC的控制楼层的电梯系统，是毕业论文哦，希望对你有帮助！单片机学习：http://www.emcuc.com(Floor elevator control system based on PLC, is the thesis Oh, you want to help! SCM learning: http://www.emcuc.com)

通过把开机次数记录在24C02中，并在数码管上显示出来， 124C02的写保护脚为低电平，即允许写(Boot number of records in the 24C02, and displayed on the digital 124C02 write-protect pin is low, that is allowed to write)

锁相环芯片ADF4351的控制程序，调用非常方便(fan yi bu liao a。。。。。)

用单片机c51编写的程序 使用蜂鸣器发出超级玛丽的音乐(C51 microcontroller programs written with use of the buzzer Super Mario music)

控制蜂鸣器pic18单片机程序,测试通过，已批量生产。(Pic18 microcontroller program to control the buzzer)

j1939在康明斯电控发动机上的应用情况和基本概念(j1939 electronically controlled Cummins engine in the application and basic concepts)

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)

红外遥控发送指令，解码模块接收后，送给数码管显示(Infrared remote control sending instruction, decoding module receives, sends the digital tube display)