The first essential step in analog-to-digital conversion is to sample an analog signal.
模数转换关键性的第一步是对模拟信号进行采样。
As most physical signals in the nature are analog signals, the conversion from analog signals to digital signals has become the key step in the process of signal processing and analysis control.
但是自然界中大多数物理信号却是模拟信号，因此，将模拟信号转化成数字信号是进行信号处理和分析的首要前提。
Because DSP has analog-digital conversion interface of 10 bit, this type of interface act as sampling of analog quantity.
由于数字信号处理器具有10位的模拟——数字转换功能的接口，本文使用它的模数转换接口作为模拟量的采样。
There were analog multiplexers, A/D conversion(analog digital conversion), FIFO module, CPLD module in the hardware design and CPLD program, USB firmware, USB driver in the software design.
在硬件上包含多路开关、模数转换、FIFO模块、CPLD模块、USB模块； 在软件上包含CPLD编程、USB固件、USB驱动以及应用程序。
If the analog value is in the upper half of the analog to digital conversion range, then the bit Cm will be kept otherwise it will be discarded.
如果模拟值在模数转换范围的上半部分中，则将保持位Cm；否则，丢弃它。
If the analog value is in the upper half of the analog to digital conversion range, then the bit Cm will be kept otherwise it will be discarded.
如果模拟值在模数转换范围的上半部分中，则将保持位Cm；否则，丢弃它。
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