利用8051单片机、常用数字逻辑接口器件、ROM、RAM存储器器件、单总线数字温度传感器DS18B20，设计一种基于单片机的数字温度计，温度检测范围为0-90度，要求能够通过键盘设定温度超限报警值，通过LED或LCD显示当前温度值。-The use of 8051, commonly used digital logic interface device, ROM, RAM memory devices, single-bus digital temperature sensor DS18B20, to design a microcontroller-based digital thermometer, the temperature detection range of 0-90 degrees, requested through the keyboard transfinite set temperature alarm value, the adoption of LED or LCD displays the current temperature.