优先编码器允许同时在几个输入端有输入信号，编码器按输入信号排定的优先顺序，只对同时输入的几个信号中优先权最高的一个进行编码。
更正了教材中一道例题的错误，给出了用T4148实现32线—5线优先编码器的正确方法。
The article has corrected the mistakes in an example and provided a correct method on how to produce the priority encoder of circuit 32-5 by T4148.
编码器由8线- 3线优先编码器作为实例代表，译码器则包含3线- 8线译码器和2线- 4线译码器两个实例模块组成。
Encoders from 8-3 priority encoder for example, and decoder includes 3-8 decoder and the 2-4 examples of the two decoder modules.
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