V2EX half-duplex

Half-duplex

定义 Definition

半双工:一种通信方式,数据可以在两个方向上传输,但不能同时进行;同一时间只能一方发送、另一方接收,需轮流切换(常见于对讲机、部分串口通信、早期以太网集线器环境等)。

例句 Examples

The walkie-talkies are half-duplex, so wait until I finish speaking.
对讲机是半双工的,所以等我说完你再讲话。

In a half-duplex network, careful timing and collision-avoidance rules help devices take turns sending data over a shared channel.
在半双工网络中,需要通过精确的时序与避免冲突的规则,让设备在共享信道上轮流发送数据。

发音 Pronunciation (IPA)

/hf dupleks/ (美式常见)
/hf djupleks/ (英式常见)

词源 Etymology

half- 表示“半、部分”;duplex 源自拉丁语 duplex,意为“双重的、成双的”(duo“二”+ -plex“折/重”相关构词)。在通信领域中,duplex 指“双向通信”,而 half-duplex 就是“能双向,但只能轮流进行”的通信模式。相关概念还有 full-duplex(全双工)

相关词 Related Words

文学与著作中的用例 Literary Works

  • Andrew S. Tanenbaum & David J. Wetherall,《Computer Networks》:在以太网与介质访问控制(MAC)相关章节中讨论半双工/全双工与冲突机制。
  • W. Richard Stevens,《TCP/IP Illustrated, Volume 1》:在网络链路与以太网实践语境里提及半双工环境及其影响。
  • IEEE 标准文档(如与以太网相关的 IEEE 802.3 资料):在链路工作模式与物理层/链路层描述中出现 half-duplex 术语。
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