Owner manual

J
jack A socket used for a telephone line or other electrical connections.
jaggies Jagged character borders that occur when viewing on-screen
bitmapped fonts. Characters are composed of separate pixels.
L
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.
log off To type a command to the host computer that terminates the
communications session.
log on To enter a series of responses to prompts by the host computer to
identify yourself, your password, sometimes your terminal, and so forth, to
start a communications session.
M
mainframe computer A large computer whose speed and storage capacity allow
it to handle huge amounts of data and work with many terminals.
millisecond One thousandth of a second; abbreviated ms.
MNP An abbreviation for Microcom Networking Protocol. MNP Classes 2–4
are error control protocols. MNP Class 5 is a data compression protocol.
modem A device for converting serial information into tones that can be
transmitted over telephone lines. The tones are modulated (changed in pitch)
to represent the information; modem stands for “modulator/demodulator”.
modulate To modify or alter a signal to transmit information; for example,
conventional broadcast radio transmits sound by modulating the amplitude
(amplitude modulation, or AM) or the frequency (frequency modulation, or
FM) of a carrier signal.
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G LOSSARY