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I/O
Input/Output. The transfer of information into and out of a computer.
ISO
International Standards Organization.
ITU
International Telecommunications Union (formerly known as CCITT). ITU is the principal
communications standards organisation.
J
Jack
A socket used for telephone line or other electrical connections.
K
Kermit
Kermit is a file transfer protocol developed for operating systems which could not support the
XModem protocol. Kermit was developed at Columbia University in 1981.
Keying
Videotex systems only. Refers to pressing of numeric keys to access an item from an index.
L
Leased Line
A telephone line permanently connecting two or more locations. It does not have any switching
equipment associated with it and runs between specific, fixed locations. Also known as a private
line.
LED
Acronym for light emitting diode. See Light Emitting Diode.
Light Emitting Diode
A diode which glows when a current flows through it. Often used as an indicator light.
Link
A circuit or transmission path, including all equipment, between a sender and a receiver.
Local Echo
A method of communication in which your modem or software displays data locally on your
screen, without relying on the host computer to echo the characters back.