Abstract:Monolithic integrated circuit's is getting more and more widespread in everyday use electronic products application, the temperature is a quantity which in the people daily life needs to survey and to control frequently. This design used at89C2051 monolithic integrated circuit and temperature sensor DS18B20 introduced from the hardware and the software two aspects a section of simple digital thermometer's design process, and has made the succinct description on the hardware schematic diagram and the program flow diagram. The digital thermometer and the traditional thermometer compares, has the reading to be convenient, the temperature measurement scope is broad, the temperature measurement is accurate, its output temperature uses the digit to demonstrate, mainly uses to the temperature measurement quite accurate place.
Key words: Single-chip AT89C2051; temperature sensor DS18B20; drive 74HC24
