由DS18B20实现对温度的采集；由ZLG7290做人机对话平台，驱动数码管显示温度值；利用单片机的P1（8位）和P3（部分口线）构造系统。对采集到的温度使用查表法进行数据处理，整数部分为两位，小数部分为四位。将采集到的温度与温度设定值比较，若高于上限报警使用中断方式驱动蜂鸣器发声。键盘设定报警值使用12个按键来控制，s0~s9对应0~9一共十个数码，s11为设定响应键，只有按下s11才会进入按键设定程序，否则不会响应。S12为确定，用于温度设定之后返回。-Achieve DS18B20 temperature acquisition　by ZLG7290 man machine dialogue platform, driven digital display temperature value　microcontroller P1 (8-bit) and P3 (part of the mouth line) constructed system. Data collected temperature using a look-up table method, the integer part two, the fractional part is four. Collected temperature and temperature setpoint higher than the upper limit alarm interrupt-driven buzzer sounds. Keyboard 12 keys to control the set alarm value, s0 ~ s9 corresponds to 0 to 9, a total of ten digital s11 to set the response key, only press the the s11 will enter button setup process, or will not respond. Returns after S12 is determined for the temperature setting.