DS18B20 是DALLAS 公司生产的一款数字温度传感器，具有精度高、全数字化、连线少等优

点； 但其I/O 时序要求严格， 使大多数编程人员不得不用汇编语言编写接口程序。本文介

绍DS18B20 数字温度传感器的C51 接口程序及其编程方法和编程思路。-DALLAS DS18B20 is produced by a digital temperature sensor with high precision, fully digital, excellent connections and less

Point　but its I/O time-critical, so that most of the programmers had to use assembly language interface program. This referral

Shao DS18B20 digital temperature sensor C51 interfaces and programming procedures and programming ideas.