8
Macintosh Communications
Introduction
With a modem and a communications software package,
the Mac
is
capable
of
communicating with other computers.
The term
"modem"
is
an
acronym meaning
modulator/de-
modulator. The purpose
of
the modem
is
to interface between
the Mac
and
the telephone system. The Mac processes data
formatted in I
's
and
O's
as
we
discussed in chapter one. The
telephone system deals in audible sounds. The
modem'sjob
is
twofold. First, the modem must accept instructions from the
Mac telling it what to do. These instructions include com-
mands to set
data
format, answer the telephone,
and
dial a
phone number.
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