The control circuit of the probe has been divided into four modules, namely, infrared LED drive circuit module, monolithic processor control module, keys trigger module and data communication module.

光学测棒硬件控制电路划分为：LED驱动电路、单片机控制、按键触发和数据通信四个功能模块。

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Have designed the concrete drive circuit of LED light sources and the concrete circuits of preamplifier and subtracter, etc.

设计了具体的LED光源的驱动电路，以及前置放大器、减法器等的具体电路。

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The structure and the composition of drive & display circuits of LED intelligence display screen are introduced in this paper. The principle of the circuit is analyzed in details.

介绍了LED智能显示屏的结构、驱动与显示电路的组成，对该电路的原理进行了详尽的分析。

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