| 单词 | FDX (Full DupleX) |
| 释义 | FDX (Full DupleX) half-duplex (HDX) circuit differs in that it supports information transfer in both directions, but only one direction at a time. Most circuits are FDX in nature. Joseph B. Stearns of Boston, Massachusetts (United States) invented the first working FDX communications circuit, which was installed in 1872 on a one-wire telegraph system using a ground return. This system effectively doubled the traffic capacity of the circuit, and at much lower cost than stringing another wire. See also HDX and simplex. |
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