encrypt (v.)youdaoicibaDictYouDict[encrypt 词源字典]
1968 in telecommunications, a back-formation from encryption (1964), or from en- (1) + crypt (n.) on the notion of "hidden place" (see crypto-). Related: Encrypted; encrypting.[encrypt etymology, encrypt origin, 英语词源]
modulate (v.)youdaoicibaDictYouDict
1610s, in music, back-formation from modulation, or else from Latin modulatus, past participle of modulari. General sense from 1620s. In telecommunications from 1908. Related: Modulated; modulating.
telecommunication (n.)youdaoicibaDictYouDict
1932, from French télécommunication (see tele- + communication). Related: Telecommunications.
BluetoothyoudaoicibaDictYouDict
"A standard for the short-range wireless interconnection of mobile phones, computers, and other electronic devices", 1990s: said to be named after King Harald Bluetooth (910–85), credited with uniting Denmark and Norway, as Bluetooth technology unifies the telecommunications and computing industries.
phreakingyoudaoicibaDictYouDict
"The action of hacking into telecommunications systems, especially to obtain free calls", 1970s: alteration of freaking (see freak). The change from f- to ph- was due to association with phone1.