单词 | keysender |
释义 | keysendern. 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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