Introduction
to
the
Apple
lie
25
A
number
of
other
cards are also available
for
the
Apple
lie.
These
include
communications
cards
which
allow
you
to
con-
nect
you
Apple
lie
to
a
modem,
which
in
turn
allows
your
Apple
to
accept data
transmitted
over
telephone
lines. Cards are also
available
which
convert
digital
signals
to
analog and vice versa.
Finally, cards are also available
that
allow
the
Apple
lie
to
run
under
an
operating
system
completely
different
from
Apple
DOS
known
as
CP/M
Communications
The
Apple
lie
can
communicate
with
another
Apple
computer
located
a
few
miles away
or
a
few
thousand miles away. A
device
known
as
a modem,
your
telephone,
and
telephone
lines
allow
this
communication
to
take place.
A
modem
converts signals generated
by
the
lie
into
signals
which
can
be
transmitted
over
telephone
lines. A
modem
will
also
reconvert
the
signals transmitted
over
phone
lines back
into
a signal
which
can be
understood
by
the
lie.
Generally,
a
modem
is
connected
to
the
lie
using a Super Serial
Card.
Once
the
Super Serial Card
has
been installed (in slots 1-7),
connect
the
card
to
the
modem.
Then,
connect
the
modem
to
your
telephone.
A
modem
allows
the
user
to
access
one
of
the
many available
information services. Examples
of
these information services include
Compuserve, The Source, and
the
Dow
Jones News and
Quotes
service. A
modem
also allows
communications
with
other
Apples.
SOFTWARE
Software can be described
as
the
instructions
or
programs that
cause
the
computer
to
operate. Several
different
classifications
of
software exist
for
the
performance
of
different
functions.
These can be classified
as
operating
systems, languages, and
applications programs.
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