| 释义 |
modem|ˈməʊdɛm|
[f. modulator + demodulator.]
A combined modulator and demodulator (such as is used in connecting a computer to a telephone line) for converting outgoing signals from one form to another and converting incoming signals back again.
1958Proc. Inst. Electr. Engineers CV. b. 450/2 Following carrier system terminology, it can be called a ‘modem’. 1961G. L. Evans et al. in Convention Rec. 5th National Symposium Global Communications 100 A recent study of wireline data communications..has underlined the need for advancement in the field of data modulators-demodulators (modems). 1963Daily Tel. 16 Dec. 15/2 The direct current (DC) signals which flow through a computer cannot be transmitted over telephone lines, so it is necessary to convert them... The black box which does this conversion at either end of the line is called a modem. 1971New Scientist 7 Jan. 18/1 It is around 3:30 pm in the communications control room of Time Sharing Ltd, in London's West End. The modems are silent... Power has been off for half an hour. 1975Daily Colonist (Victoria, B.C.) 13 May 27/1 They communicated over regular telephone lines, using teletypewriters connected to the lines by electronic devices known as modems. |