说明：  以AT89S51为核心，设计系统硬件电路，并根据所设计的电路制作实物。 （2）分析任务要求，绘制程序流程图，编写相应的软件程序。 （3）编写设计说明书，内容包括：电路原理图；程序流程图，源程序清单；电
(AT89S51 as the core design of hardware circuit, and physical and produced according to the design of the circuit. (2) analysis of mission requirements, drawing program flow chart, write the software program. (3) the preparation of design specifications, including: circuit schematics program flowcharts, source list power)