着重叙述了定位报告系统（PLRS）定位信息处理中选取最佳测距设备的思想、原理，对实现最佳测距设备选择的仿真结果作了分析。
The idea and the principle of how to choose the best distance measurement equipment in location information process of PLRS (Position Location & Reporting System) are discussed.
同时，学习使用单片机是了解计算机原理与结构的最佳选择。
At the same time, learning to use the principle of single-chip computer to understand and structure the best choice.
同时，学习使用单片机是了解计算机原理与结构的最佳选择。
At the same time, the study use monolithic integrated circuit is understands the computer principle and the structure best choice.
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