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哑终端

哑终端,计算机科学中表示一个相对于其他种类比较“聪明”的计算机终端来说,功能较为有限的计算机终端。其具体的含义根据不同语境(场合)而变化。

非常早期的終端機,輸入和顯示都用打字方式
1982年的Tele925

在老式的采用RS-232串行口连接的计算机终端,哑终端指不能执行诸如“删行”、“清屏”或“控制光标位置”的一些特殊ANSI转义序列(escape sequences)的计算机终端。在此意义上,哑终端还被称作玻璃电传打字机glass teletypes),因为它与电传打字机有着类似的有限功能。这类哑终端仍然被现代的类Unix操作系统所支持。可以将系统的环境变量TERM设置为dumb来启用支持。(smartintelligent是指那些支持ANSI转义序列的终端。

在更宽的意义上,哑终端包括了所有形式的包含键盘和屏幕的计算机通信设备。包括个人电脑(personal computers)、无盘工作站(diskless workstations)、网络电脑(network computers)、瘦客户端(thin clients)和X终端(X Terminals)。

哑终端有时候也指任何类型的采用RS-232串行通信方式连接的老式计算机终端。

参见

  • 瘦客户端(Thin clients)
  • 绿屏(Green screen)
  • 计算机终端(Computer terminal)

外部链接

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哑终端
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