文章分析了VGA信号实时转换系统的应用前景，给出了该系统硬件结构的基本框图。
This paper analyzes the application prospects of VGA signal real time conversion system, and gives the basic skeleton diagram of the system's hardware structure.
通过对旋转风机叶片表面压力信号测量的应用，介绍了风机实验台的信号光电转换系统的结构及原理；
The theory and structure of the opt-electronic pressure measuring and transferring system are introduced, which has been used in measuring static pressure of the rotating centrifugal fan successfully.
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