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本文给出了一种以Z-80为中心的IIR数字滤波器系统。借助键盘输入十进制滤波系数即可改变其滤波特性。文中简要地论述了将滤波系数转换为CSD码以及使系统处理速率得以提高等关键技术的实现方法。
This paper presents an II-Z digital filter system centered on the Z-80. Use the keyboard to enter the decimal filter coefficient to change its filtering characteristics. In this paper, the key technologies of converting filter coefficients into CSD codes and improving the system processing speed are briefly discussed.