26 Macintosh
User's
Handbook
operations
can
require as
many
as ten disk swaps. This
can
cause
undo
wear
and
tear
on
the disks causing them to age
prematurely. In fact,
we
feel
that
the optional second disk drive
is
essential to normal operation
of
the Mac.
THE NUMERIC
KEY
PAD
Another optional unit available for the Mac is the numeric
key pad. It plugs directly into the keyboard. The numeric key
pad allows easier entry
of
pure
numeric
data
into
a text file.
This option features a standard numeric key pattern along with
direction arrows for maneuvering
about
a document.
It
can
substitute for the keyboard when using Macintosh applications.
MACINTOSH COMMUNICATIONS
In
order to connect the Mac to
other
data
processing
machines through phone lines, Apple has provided for the
addition
of
an
optional modem. Modems are available in 300
baud*
and
300/1200 baud models. Although Apple distributes
the standard modem for the Mac,
other
companies manufac-
ture compatible modems as well.
A software package called MacTerminal
is
due to be
released in mid 1984 which
will
allow the Mac to use the
modem to communicate. The
program
will feature automatic
dialing
and
answering
and
will operate with touch-tone
and
rotary dial systems. Communications will be possible with
other
computers as well as many
of
the various
data
services
which operate
around
the world.
* One baud
is
about
one bit per second data transfer.
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