<s>
The	O
Sharp	B-Device
PC-3000	I-Device
was	O
an	O
MS-DOS-based	O
palmtop	B-Operating_System
computer	I-Operating_System
introduced	O
in	O
1991	O
.	O
</s>
<s>
The	O
"	O
SPC	O
"	O
was	O
designed	O
and	O
developed	O
by	O
Distributed	B-Device
Information	I-Device
Processing	I-Device
Research	O
Ltd	O
.	O
(	O
"	O
DIP	O
"	O
)	O
in	O
the	O
UK	O
.	O
</s>
<s>
DIP	O
had	O
earlier	O
designed	O
the	O
Atari	B-Device
Portfolio	I-Device
and	O
the	O
two	O
machines	O
shared	O
many	O
design	O
features	O
both	O
in	O
hardware	O
and	O
software	O
.	O
</s>
<s>
The	O
machine	O
was	O
one	O
of	O
the	O
first	O
to	O
support	O
the	O
PC	B-Architecture
card	I-Architecture
interface	I-Architecture
,	O
at	O
the	O
time	O
known	O
as	O
PCMCIA	B-Architecture
.	O
</s>
<s>
Choice	O
were	O
MS-DOS	B-Application
3.3	O
and	O
Microsoft	O
Windows	O
3.0	O
(	O
running	O
in	O
real	B-Application
mode	I-Application
with	O
a	O
mouse	O
)	O
.	O
</s>
