This paper is to make a contrast between Prim and Dijkstra in aspects of algorithm thought and schematic drawing.

从算法思想、示意图进行分析比较，突出其不同点。

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It describes several aspects of the circuit in detail including essential principle, brief introduction of chips used and corresponding schematic diagram.

分别对各部分电路进行了详细描述，包括电路的基本原理，所使用芯片的简要介绍，以及对应的电路实际原理图。

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