<s>
The	O
Twentieth	B-Device
Anniversary	I-Device
Macintosh	I-Device
(	O
or	O
"	O
TAM	O
"	O
)	O
is	O
a	O
limited-edition	O
personal	B-Device
computer	I-Device
released	O
in	O
1997	O
to	O
mark	O
Apple	O
's	O
20th	O
birthday	O
.	O
</s>
<s>
However	O
,	O
the	O
design	O
team	O
had	O
already	O
been	O
working	O
on	O
several	O
"	O
dream	O
"	O
concepts	O
,	O
and	O
soon	O
settled	O
on	O
the	O
most	O
feasible	O
of	O
those	O
:	O
the	O
(	O
almost	O
)	O
all-in-one	B-Device
LCD-based	O
design	O
.	O
</s>
<s>
The	O
TAM	O
featured	O
a	O
250MHz	O
PowerPC	O
603ev	O
processor	O
and	O
12.1	O
"	O
active	B-Device
matrix	I-Device
LCD	I-Device
powered	O
by	O
an	O
ATI	O
3D	O
Rage	O
II	O
video	O
chipset	O
with	O
2	O
MB	O
of	O
VRAM	O
capable	O
of	O
displaying	O
up	O
to	O
16-bit	O
color	O
at	O
either	O
800x600	O
or	O
640x480	O
pixels	O
.	O
</s>
<s>
It	O
had	O
a	O
vertically	O
mounted	O
4x	O
SCSI	B-Architecture
CD-ROM	B-Device
and	O
an	O
Apple	O
floppy	O
SuperDrive	B-Device
,	O
a	O
2	O
GB	O
ATA	B-Protocol
hard	O
drive	O
,	O
a	O
TV/FM	O
tuner	O
,	O
an	O
S-Video	O
input	O
card	O
,	O
and	O
a	O
custom-made	O
Bose	O
sound	O
system	O
including	O
two	O
"	O
Jewel	O
"	O
speakers	O
and	O
a	O
subwoofer	O
built	O
into	O
the	O
externally	O
located	O
power	O
supply	O
"	O
base	O
unit	O
"	O
.	O
</s>
<s>
The	O
TAM	O
came	O
with	O
a	O
unique	O
75	O
key	O
ADB	B-Device
keyboard	O
which	O
featured	O
leather	O
palm-rests	O
and	O
a	O
trackpad	B-Application
instead	O
of	O
a	O
mouse	O
.	O
</s>
<s>
The	O
trackpad	B-Application
could	O
be	O
detached	O
from	O
the	O
keyboard	O
if	O
desired	O
,	O
with	O
a	O
small	O
leather	O
insert	O
found	O
underneath	O
the	O
keyboard	O
ready	O
to	O
fill	O
the	O
gap	O
.	O
</s>
<s>
When	O
not	O
required	O
,	O
the	O
keyboard	O
could	O
slide	O
under	O
the	O
TAM	O
's	O
head	O
unit	O
,	O
leaving	O
the	O
trackpad	B-Application
exposed	O
for	O
continued	O
access	O
.	O
</s>
<s>
The	O
pre-installed	O
operating	O
system	O
was	O
a	O
specialized	O
version	O
of	O
Mac	B-Operating_System
OS	I-Operating_System
7.6.1	I-Operating_System
,	O
which	O
allowed	O
control	O
over	O
those	O
features	O
.	O
</s>
<s>
It	O
is	O
the	O
last	O
Macintosh	O
model	O
able	O
to	O
boot	O
and	O
run	O
System	B-Operating_System
7	I-Operating_System
natively	O
.	O
</s>
<s>
Expandability	O
was	O
offered	O
via	O
a	O
7-inch	O
PCI	B-Protocol
slot	I-Protocol
and	O
Apple	B-Device
Communication	I-Device
slot	I-Device
II	I-Device
for	O
the	O
addition	O
of	O
Ethernet	O
.	O
</s>
<s>
Welcome	O
to	O
The	O
20th	B-Device
Anniversary	I-Device
Macintosh	I-Device
Web	O
Site	O
—	O
the	O
"	O
Official	O
"	O
home	O
of	O
the	O
TAM	O
user	O
community	O
.	O
</s>
<s>
This	O
is	O
the	O
place	O
where	O
20th	B-Device
Anniversary	I-Device
Macintosh	I-Device
owners	O
can	O
share	O
a	O
wealth	O
of	O
information	O
on	O
this	O
"	O
insanely	O
great	O
"	O
product	O
.	O
</s>
<s>
The	O
TAM	O
(	O
Twentieth	B-Device
Anniversary	I-Device
Macintosh	I-Device
)	O
is	O
a	O
unique	O
machine	O
in	O
the	O
world	O
of	O
computers	O
and	O
this	O
site	O
will	O
help	O
you	O
get	O
the	O
most	O
out	O
of	O
yours	O
.	O
</s>
<s>
In	O
March	O
1998	O
he	O
made	O
sweeping	O
changes	O
,	O
including	O
scrapping	O
the	O
Newton	B-Device
MessagePad	I-Device
.	O
</s>
<s>
PC	O
World	O
placed	O
the	O
TAM	O
as	O
25th	O
in	O
their	O
"	O
Worst	O
Tech	O
Products	O
of	O
All	O
Time	O
"	O
feature	O
in	O
2006	O
,	O
citing	O
it	O
as	O
one	O
of	O
the	O
priciest	O
listed	O
personal	B-Device
computer	I-Device
with	O
played-out	O
specs	O
.	O
</s>
<s>
While	O
the	O
Twentieth	B-Device
Anniversary	I-Device
Macintosh	I-Device
may	O
not	O
have	O
been	O
a	O
well-known	O
machine	O
for	O
its	O
time	O
,	O
nor	O
a	O
big	O
seller	O
,	O
it	O
did	O
have	O
a	O
lasting	O
influence	O
on	O
personal	B-Device
computers	I-Device
.	O
</s>
<s>
Like	O
the	O
TAM	O
,	O
Apple	O
's	O
modern	O
iMac	B-Device
,	O
starting	O
with	O
the	O
G5	B-Device
model	O
,	O
uses	O
a	O
vertically	O
mounted	O
removable	O
drive	O
(	O
i.e.	O
</s>
<s>
SuperDrive	B-Device
)	O
behind	O
the	O
screen	O
.	O
</s>
<s>
Even	O
the	O
removable	O
trackpad	B-Application
has	O
been	O
replicated	O
with	O
Apple	O
's	O
Magic	O
Trackpad	B-Application
.	O
</s>
<s>
External	O
power	O
supplies	O
were	O
also	O
used	O
in	O
later	O
Apple	O
computers	O
such	O
as	O
the	O
Power	B-Device
Mac	I-Device
G4	I-Device
Cube	I-Device
and	O
Mac	B-Device
Mini	I-Device
.	O
</s>
<s>
Serial	B-Application
Experiments	I-Application
Lain	I-Application
(	O
1998	O
)	O
:	O
The	O
first	O
computer	O
Lain	O
has	O
is	O
a	O
red-colored	O
TAM	O
.	O
</s>
