| 释义 |
quaternary signalling
四元信号
An electrical communications mode in which information is passed by the presence or absence, or plus and minus variations, of four discrete levels of one parameter of the signalling medium.
一种电子通信方式，在这种方式下信息通过发信号媒体某个参数的有无电平或加减 一个偏差等四种离散电平方式来传输。 |