Abstract
SCM application technology develop rapidly, looking around us now in all spheres of life, from missiles, navigation equipment, to the various instruments on the aircraft control from a computer network communications and data transmission, industrial automation to real-time process control and data processing, and our lives extensive use of the smart card, electronic pets, which is inseparable from the microcontroller. Monolithic single-chip is the set of CPU, RAM, ROM, the timing, number and variety of interface integrated microcontrollers. Its small size, low cost, high performance, which are widely used in smart industries, and industrial automation. And 51 Series SCM is the most typical and the most representative one. The graduation design Through the study, and thereby achieve the study, design, development hardware and software capabilities.
Based on a microcontroller based on the will to achieve calendar of a multi-functional electronic clock design, Thereby achieve studying and understanding the relevant directives SCM in all aspects of the application. By main control AT89S52、clock circuit DS1302、The temperature sensor DS18B20、display circuit、keystroke circuit and restore circuit component, to achieve clock calendar display function can be carried out, hours seconds of the show and real-time temperature display.
Keywords : SCM AT89S52 clock circuit DS1302 The temperature sensor DS18B20 perpetual calendars