Abstract：With the era of progress and development, SCM technology has become popular we live, work, research, in all fields, has become a relatively mature technology. This paper will introduce a single-chip microcomputer-based control of the digital thermometer, from both hardware and software on SCM AT89C2051 temperature control system design, hardware and procedures schematic diagram of a concise description. The design presented by the digital thermometer with the traditional thermometer, compared to the reading convenience, a wide range of temperature measurement, accurate temperature measurement, digital output temperature revealed that the use of SCM AT89S51 controller design, the use of temperature sensors DS18B20, with a total of three anode to the LED digital serial transmission of data, temperature, can accurately achieve the above requirements.
Key words: single-chip AT89C51; temperature sensor DS18B20; analog-to-digital; digital display.
