The principle and structure of bar graphic type pressure meter are described. Especially, the drive circuit and test method are described.
本文介绍光柱式压力表的原理和结构，专门叙述了驱动电路和调试方法。
The system mainly consists of a single board microcomputer, a X-Y graphic meter and a teaching box.
实验台主要由单板机、X—Y笔式记录仪和示教盒组成。
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