随着电子信息技术的发展,数字信息处理技术能够处理越来越复杂的模拟或数字信号,而信息的高精度、高频率也对处理技术有了许多新的要求。当外部信息为模拟量时,在数字信息处理过程中要提取信号的时域特征、频域特征等参数时,就必须对模拟信号进行采样和数据量化。有两种基本的数字化采样方式:实时采样与等效采样。实时采样是对信号波形的逐点采集,可以实时显 With the development of electronic information technology, digital information processing technology can process more and more complex analog or digital signals, and the high precision and high frequency of information also have many new requirements for processing technology. When the external information is analog, it is necessary to sample and quantize the analog signal when it is necessary to extract parameters such as the time-domain characteristic and the frequency-domain characteristic in the digital information processing. There are two basic digital sampling methods: real-time sampling and equivalent sampling. Real-time sampling is a point-by-point acquisition of the signal waveform can be real-time display