| Having the characteristics of strong control function, high reliability, small volume and low cost, Microcontroller unit(MCU) has broad application prospect in intelligent instruments and apparatus, industrial measuring and controlling system, and home appliances. Almost all of universities and colleges provide MCU course, namely the principle and application of MCU. This course is a practical course, which needs a suit of experimental platform and experimental projects to support teaching and learning process.In the thesis, based on the requirement of auther's work, the key technology problems in the design and implementation of multi-function MCU experimental and development board is studied. The main work of this thesis includes:(1) System requirement analysisInvestigating the theoretic and practical teaching reafity of the MCU course, analyzing and summarizing the teaching rules (especially the practical teaching), investigating the characteristics of the existing MCU experiment flatforms and their advantages and deficiencies.(2) Overall technology design of the experimental platform.The fundamental function of teaching and experiment platform of the MCU course is analyzed and planed.The overall technology scheme is made. And main CMOS chip, simulation mode, programming mode and function extension are selected and designed.(3) Hardware and software design and implementation of MCU experimental flatformBecause 51 series MCU,a common simulators, has following drawback:high price, difficult in function extension, not suit for used as user target board, and its simulation software can't support the real-time hardware debug, the board designed in this thesis used ATMEL's AT89S52 MCU as the core and best used its board resources. In addition, LED, LCD, A/D conversion and many other modules are designed as its periphery equipments. The board has advantage of low cost, strong practicality and good expansibility. It can be used not only as an experimental board, but also as a general development board for course design, graduation design, and extracurricular electronic design. |
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