It presents a system of voltage measurement with self-scale, based on the program control amplifier controlled by the single chip computer.

提出一种自动量程切换电压测量系统的设计方法，该系统基于程控增益放大器器件，使用单片机控制其增益实现量程的自动切换。

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A way of controlling the voice volume in a wide range with program-control amplifier, the hardware circuit and constructing method of software are given.

采用程控放大器对音量进行宽范围控制，提供了具体硬件电路并指出了软件构成方法。

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The system is composed of microcomputer, sensor of pulse, program-control amplifier and data sampler.

该系统是以微型计算机为主，由脉搏传感器，程控放大器和多功能数据采集器组成。

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