Based on the control block of LED display driving chip, the control codes in SDRAM are also given out in the appendix of the dissertaion.

基于LED大屏显示系统和驱动芯片，而设计了的控制模块，并在附录一给出了控制用SDRAM的代码实现方式。

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The design using ATMEL89C51 single chip to control the step-motor with its controller, driving circuit and LED display circuit to realize step motor open-loop control were introduced.

通过ATMEL89C 51单片机对步进电机进行控制，主要介绍了步进电机控制器、驱动电路和LED显示电路的设计，实现了步进电机的开环控制。

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The system is mainly composed of hardware circuit module such as 89c51 single-chip computer, modulus conversion, driving display, positional switch inputting, controlling key etc.

系统主要以89c5 1单片机为核心，采用模数转换、驱动显示、位置开关输入、控制键盘输入等硬件电路模块组成。

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