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单词 keysender
释义

keysendern.

Brit. /ˈkiːsɛndə/, U.S. /ˈkiˌsɛndər/
Origin: Formed within English, by compounding. Etymons: key n.1, sender n.
Etymology: < key n.1 + sender n.
Now historical.
1. Telegraphy. A machine for generating a Morse signal with a single keystroke. rare.
ΘΚΠ
society > communication > telecommunication > telegraphy or telephony > telegraphy > telegraph > [noun] > transmitter
communicator1840
keysender1903
1903 Proc. Ann. Meeting Soc. Railway Telegr. Superintendents 36 The Associated Press, using code, sent from Washington to Chicago, 3500 words an hour, and I do not believe a key sender can duplicate that work.
2006 Brit. Jrnl. Hist. Sci. 39 296 The pair's improved key sender and receiver marked Morse's ascension into the pantheon of American heroes.
2. Telephony. Esp. at a telephone exchange: a mechanical device for establishing connection with a particular telephone by pressing a succession of numbered keys (instead of using a dial).
ΘΚΠ
society > communication > telecommunication > telegraphy or telephony > telephony > telephone equipment > [noun] > exchange > exchange equipment
private line1852
bank1884
call-disc1884
howler1886
trunk1889
multiple switchboard1891
rack1893
line switch1898
heat coil1900
relay rack1902
multiple1905
listening key1906
telharmonium1906
wiper1906
preselector1912
line finder1922
rank1924
routiner1928
keysender1929
uniselector1930
wiper arm1933
1929 Telegraph & Telephone Jrnl. 16 34/1 The light, airy switchroom, the tap-tap of the keysenders and the humming of the dials, this is my introduction into the subscriber's Paradise—an Automatic Exchange.
1934 Post Office Electr. Engineers' Jrnl. 27 32/1 It has recently been decided..to provide mechanical keysenders both for P.B.X. operators and, if desired, for individual telephones.
1970 New Scientist 5 Nov. 275/1 Tests at the St Albans exchange showed that the keysender was markedly quieter than the rotary dial and saved an average of 2–3 seconds on each call.
This entry has been updated (OED Third Edition, December 2012; most recently modified version published online March 2022).
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n.1903
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