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。
This article introduces the Chinese spelling input in LED display screen by using infrared remote controller, including area code input and spelling input.
本文详细介绍在处理LED显示屏中文信息时使用红外遥控输入汉字的方法：区位码输入法和拼音输入法。
Have data when upgrading, LED display screen control and show by controller.
专用控制器则接受数据，缓冲并控制LED显示器，完成数据传输。
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