Arduino is a popular electronic interactive platform at present,developed by microcontroller system.With the advantages such as simple to use, versatile and inexpensive,it is widely used in the design of electronic system and development of interactive product.The features and basic structure of Arduino are described in detail,and LEO control circuit shows the ssing method of Arduino.%Arc]uino是目前较为流行的电子互动平台，基于单片机系统开发，具有使用简单、功能多样、价格低廉等优点，广泛应用于电子系统设计和互动产品开发方面。文中详细介绍了Arduino的功能特点、基本结构，并通过LEO控制电路的应用给出了具体的使用方法。
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