从降低学生的学习成本,提高学生动手能力的角度出发,设计了最多可完成21个项目的多功能单片机实验系统.该实验系统硬件由最小系统、编程接口、输入输出接口、各类串行总线接口及AD、DA等应用模块组成,硬件电路可拓展、可剪裁、可灵活搭配,能够完成主流51系列单片机和AVR单片机实验.软件采用汇编语言或者C51设计,也可以运行Small RTOS51或μC/OS-Ⅱ操作系统以加快开发速度.实践证明,设计的单片机实验系统具有成本低廉、通用性好、软硬件扩展性强、使用方便等优点,可提高单片机课程的教学效果.%In order to decrease the students' learning cost,improve their practical ability,a kind of multifunctional single chip microprocessor SCM) experimental system is designed which can fulfill twenty-one experiment items. The hardware of this system consists of the minimum system,the programming interface,the input and output interface, various kinds of serial bus interface and application modules, such as AD, DA, etc. The hardware circuit is expandable, cuttable, can be selected flexibly,and is able to finish experiments with mainstream 51 series SCM and AVR SCM. The software can be designed by assembly language and C51. It can also run the operation system of Small RTOS51 and μC/OS-Ⅱ to accelerate development speed. Practice shows that this SCM experimental system has the advantage of low cost,excellent generality, strong hardware and software expansibility, and easy to use, etc. It can increase the teaching effect of SCM course.
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