In recent years along with technical rapid development,Take microelectronic technology,computer technology and communication as forerunner's information revolution vigorous development。The computer technology took three one,how wields its function concurrently with a practical application more effective union。The monolithic integrated circuit took the computer technology a branch,in the unceasing application practical life,simultaneously is leading the traditional control examination the renewal。In the real-time examination and in the automatic control application system,the monolithic integrated circuit often takes a core part use,in view of concrete application object characteristic, Matches comes by other components to consummate。
This new intelligent electronic thermometer, in which microprocessor plays a key role, under the control of software, can unit all the hardware circuit to implement the intelligent measurement. It can not only measure a temperature precisely, but also broadcast your temperature, judge it logically, and display it with a LCD module in the from of Chinese characters. According to the characteristics of SCM8051 and the principles of A/D transformed apparatus,the digital zatuib and automation of measurement of temperature are will he brought about.This paper mainly aims at probing an d studying the digital thermograph hardware and software which grouped by SCM8051.AD574A and produced by Intel Company. It also lists sectional assembly source program for reference. The internal configuration,principle and technical features of LCD controller are introduced.The applications of LCD controller in time—display is discussed,and their best interface ways,control design with SCM8051 are described briefly.The programming method,diagram of serial clock chip are provided.This article designed an electronic circuit connection between AD574 and SCM8051 Single chip computer through analyzing of function,character sties and work cycles chart of the program and the source procedure corresponding with it according to the facts.