local echo

(communications)(Obsolete: "half-duplex") A mode ofoperation of a communications program or device in which itdisplays the characters the user enters at the same time as itsends them to the remote system.

In communications between computers or computing processes,particularly those involving human keyboarding and/or reading,duplex came to mean the re-transmission of a keyboardcharacter to the output display.

Early input device such as the Teletype ASR-33teleprinter, being descended from the electric typewriter,printed all input characters as they were typed (i.e. they didlocal echo). Local echo was typically optional on the video terminals that replaced them, and usually disabled in favourof remote echo. A disadvantage of local echo is that itwill continue, even when the communication circuit has failed,which can be misleading.

local echo

In communications, to display on screen what is being transmitted.

单词	local echo
释义	local echo local echo (communications)(Obsolete: "half-duplex") A mode ofoperation of a communications program or device in which itdisplays the characters the user enters at the same time as itsends them to the remote system. In communications between computers or computing processes,particularly those involving human keyboarding and/or reading,duplex came to mean the re-transmission of a keyboardcharacter to the output display. Early input device such as the Teletype ASR-33teleprinter, being descended from the electric typewriter,printed all input characters as they were typed (i.e. they didlocal echo). Local echo was typically optional on the video terminals that replaced them, and usually disabled in favourof remote echo. A disadvantage of local echo is that itwill continue, even when the communication circuit has failed,which can be misleading. local echo In communications, to display on screen what is being transmitted.
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