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在计算机数据采集或实时控制中,通常采用A/D转换作为计算机模拟量输入接口。A/D转换速变快(可达10~(-5)秒);转换准确;A/D转换的采样程序也较简单,特别是8位A/D转换器。但A/D转换接口有下列缺点:采样分辨率有一定限制,我们用于数据采集或过程控制的计算机一般都是8位机,有时用到10位或是12位的A/D转换器,这给接口的硬件和软件都增
In computer data acquisition or real-time control, usually using A / D conversion as a computer analog input interface. A / D conversion speed faster (up to 10 ~ (-5) seconds); conversion accuracy; A / D conversion sampling procedure is relatively simple, especially the 8-bit A / D converter. However, A / D conversion interface has the following disadvantages: Sampling resolution has a certain limit, we used for data acquisition or process control computer are generally 8-bit machine, sometimes used 10 or 12-bit A / D converter, This adds hardware and software to the interface