Keep these guidelines
in
mind when you work with interface cards:
• Make sure the tiny bulb labeled
POWER
ONto
the left
of
slot 1
is
ofT.
(see
Figure 1-5.) If it's on, switch
the
computer
ofT
and wait a
few seconds. Never install
or
remove a card
when
the
power
is
on.
Doing
so
can damage the card and the computer.
• Before touching a
card
or
any
of
the computer's internal parts,
always discharge any
static electricity you might have accumu-
lated by touching the computer's
power
supply
or
any
grounded
metal object.
• Always remove any packing material
wrapped
around an imerface
card. Packing material left
on
a card
can
cause a card to overheat,
damaging the card.
• Always handle
a card by its edges and avoid touching the card's
components. Static electricity can harm these components.
• Avoid touching the "gold fingers'
on
a card's
edge
connector"
The natural oils
on
your fingertips
can
interfere with a good
connection.
• Always install a card with the bare side facing the power supply,
• When installing a card, rock
it
from from
to
back. Never try to jam
the card
straight
down
into
its
slot
or
wiggle
il
from side to side.
-
-
Chapter
1
seffing
Up
the
Apple
lie
Abyte
ts
a
unit
of
memory equal·
Ing
one character Akilobyte
Is
1024
bytas kllooytels affen
abbrelliated
as
K.
as
In
"MK.·
Note
thot
MK
Is
really
65,536
bytes
(M
x 1024)
RG8
stands
for
!led,Gleen,
Blue
An
RG8
cord1lonslotes the com-
puter's vldeo
signal
lor
RGB
manitou.
RGB
monitors
give a
sholper
plct1.Jle
and
more bliliont
CdOI
man ordinary
mOr1ltors
(camed
composite
monltOIS),
8
Installing
an
RGB
card
for
an
RGB
monitor
With the computer
lap
ofT,
you should
see
an Extended
BO-Column
Text Card already
in
the AUX CONNECTOR slot; this card was
installed
al
the factory. The Apple lIe normally displays a line
width
of
40 columns (or characters). The Extended SO-Column
Text Card boosts this number to
SO
columns,
so
that the computer
can display more characters
on
a line.
II
also adds
64
kilobytes
of
memory
to
the
64
kilobytes already
on
the main circuit board.
(Appendix F
shows you how to switch back and fonh between
<lO-column
and
SO-column screen widths.)
If
you have purchased an
RGB
color monitor, you'll
need
to
remove Ihe Extended BO-Column Tcxt Card, The RGB
card
for the
RGB
color monitor takes the
AUX.
COi\'I\'ECTOR slot inSlead.
Follow these five steps to install the
RGB
card:
1,
Check
to
see
thaI the
POWER
ON
bulb
is
ofT;
then touch the
power
supply case
to
discharge any sta:ic electricity on your
fingertips.
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