电池盒报警器，六音报警声音，关2下电门锁进入报警-Battery box alarm, the six sound alarm sound, alarm off under electric door locks into

本程序使用stm8芯片，用ds18b20作为温度采集模块，具有温度采集，温度上下限控制报警功能，使用显示屏1602作为显示端口，给编程的朋友做一个参考使用-This program uses stm8 chip, using ds18b20 as temperature acquisition module with temperature measurement, temperature control of the upper and lower alarm function, use th

国信长天开发板 51超声波测距报警及显示代码-Guoxin development board 51 long days Ultrasonic Ranging alarm and display code

密码锁，实行简单的密码设置和报警功能，并支持密码的修改-Locks, has a simple password settings and alarm functions, and supports password changes

单片机、模数转换、报警电路，当甲烷浓度大于5 时，开始报警-Microcontroller, analog to digital conversion, alarm circuit, when the methane concentration is greater than 5 , starting alarm