三股技术风潮：计算(提高生产力、数据处理)；通信(电子邮件、即时聊天等)；感知(无处不在的感知)。

Three waves of technology: computing (increase productivity, process data), communicating (email, IM, etc.), sensing (sensors embedded across world).

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然后提出并实现面向土地利用规划的电子沙盘制作的技术方案，详细介绍了数据处理、地形模拟与要素匹配等关键技术。

The key technique of the technical scheme for electronic sand table, such as data processing, terrain modeling, feature matching, is introduced in details in this paper.

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设计时采用新型电子技术与数控技术的有机结合，同时利用上位机强大的数据处理能力，实行数据分析和实时控制。

In the design, advanced electronic technology and MCU technology are combined closely. Utilizing PC resource, the system can deal with huge field data and process real-time controlling.

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