摘 要随着时代的进步和进展，单片机技术基本已经普及到我们的生活中，越来越多的工作，科研和各个领域都涉及到单片机的应用，单片机已经成为了一项比较成熟的技术。在此我将为大家介绍一项基于 C51 单片机的设计—数字温度计，这种温度计是一种新型产品，它具有多种功能，例如它可以设置上下报警温度，当温度不在设置范围内时，它就会发出报警信号随着人们生活水平不断的提高，单片机控制无疑是人们追求的目标之一，它给人生活上带来的方便也是不可否认的，其中数字温度计就是一个典型的例子，但人们对它的要求也越来越高，要为现代人生活，工作，科研提供更好更方便的设施就需要从单片机技术入手，一切向着数字化，智能化控制方向进展。本设计所介绍的数字温度计和传统温度计相比，具有度数方便，测数范围广，测温更准确，其输出温度采纳数字显示，主要用于对测温比较准确的场所，或科研实验室使用等该设计控制器使用单片机 AT89C51，测温传感器使用 DS18B20，采纳 3位共阳极 LED 数码管以串行口传送数据，实现温度显示和准确度要求。关 键 词： 数字温度计 AT89C51 DS18B20 报警AbstractWith the arrival of the "information age", as a means of obtaining information sensor technology had been significant progress, its application field, more and more widely, the demand is higher and higher. This paper USES singlechip combined with the sensor technology development and design, this paper the sensor theory and single-chip microcomputer application organically, and detailed description of the temperature sensor DS18B20 measurement environment temperature, at the same time, 51 SCM in modern electronic products is widely used and its technology has very mature, can be read out directly measured DS18B20 temperature, and the use of three wire and single-chip microcomputer is linked together, reduce the external hardware circuit, with low cost and easy to use features. Specific using single chip computer AT89C51 as a controller, and temperature sensor DS18B20 as temperature collector, design a kind of digi...
