<s>
The	O
Sharp	B-Device
PC-5000	I-Device
was	O
a	O
pioneering	O
laptop	B-Device
computer	I-Device
,	O
announced	O
by	O
Sharp	O
Corporation	O
of	O
Japan	O
in	O
November	O
1983	O
.	O
</s>
<s>
It	O
employed	O
a	O
clamshell	O
design	O
in	O
which	O
the	O
display	O
closes	O
over	O
the	O
keyboard	B-Device
,	O
like	O
the	O
earlier	O
GRiD	O
Compass	O
and	O
contemporary	O
Gavilan	O
SC	O
.	O
</s>
<s>
The	O
PC-5000	B-Device
was	O
largely	O
IBM	O
PC-compatible	O
,	O
with	O
the	O
same	O
4.77-MHz	O
Intel	O
8088	O
processor	B-General_Concept
as	O
the	O
IBM	B-Device
PC	I-Device
,	O
and	O
ran	O
MS-DOS	B-Application
2.0	O
(	O
in	O
ROM	B-Device
)	O
.	O
</s>
<s>
It	O
had	O
128	O
kilobytes	O
of	O
internal	O
memory	B-General_Concept
(	O
it	O
was	O
one	O
of	O
the	O
few	O
computers	O
to	O
use	O
bubble	B-General_Concept
memory	I-General_Concept
)	O
,	O
which	O
could	O
be	O
expanded	O
by	O
the	O
use	O
of	O
plug-in	O
cartridges	O
.	O
</s>
<s>
The	O
cartridge	O
slots	O
also	O
accepted	O
ROM	B-Device
cartridges	O
containing	O
software	O
,	O
such	O
as	O
the	O
Extended	O
BASIC	O
programming	O
language	O
and	O
the	O
EasyPac	O
software	O
suite	O
,	O
which	O
contained	O
the	O
EasyWrite	O
II	O
word	B-General_Concept
processor	I-General_Concept
,	O
EasyReport	O
reports	O
program	O
,	O
and	O
EasyComm	O
terminal	O
software	O
for	O
use	O
with	O
the	O
internal	O
modem	B-Application
.	O
</s>
<s>
It	O
featured	O
a	O
640×	O
80-pixel	O
(	O
80-character	O
by	O
8-line	O
)	O
LCD	B-Device
display	I-Device
,	O
a	O
full-travel	O
keyboard	B-Device
,	O
and	O
an	O
external	O
dual	O
5.25-inch	O
floppy	B-Device
disk	I-Device
drive	I-Device
.	O
</s>
<s>
It	O
is	O
perhaps	O
due	O
to	O
this	O
attachment	O
that	O
the	O
case	O
design	O
of	O
the	O
PC-5000	B-Device
owes	O
much	O
to	O
that	O
of	O
electronic	O
typewriters	O
of	O
its	O
time	O
.	O
</s>
<s>
While	O
far	O
more	O
portable	O
than	O
the	O
popular	O
Compaq	B-Device
Portable	I-Device
or	O
Osborne	B-Device
1	I-Device
computers	O
,	O
the	O
machine	O
weighed	O
5	O
kg	O
(	O
11lb	O
)	O
.	O
</s>
<s>
Sharp	O
succeeded	O
the	O
PC-5000	B-Device
with	O
the	O
fully	O
IBM-compatible	O
PC-7000	B-Device
in	O
late	O
1985	O
.	O
</s>
<s>
Your	O
Computer	O
magazine	O
selected	O
the	O
PC-5000	B-Device
as	O
one	O
of	O
the	O
best	O
personal	O
computers	O
of	O
1983	O
.	O
</s>
<s>
Creative	B-General_Concept
Computing	I-General_Concept
chose	O
the	O
PC-5000	B-Device
as	O
the	O
best	O
notebook	B-Device
portable	O
between	O
$	O
1,000	O
and	O
$	O
2,500	O
for	O
1984	O
,	O
although	O
criticizing	O
the	O
difficulty	O
of	O
finding	O
the	O
computer	O
in	O
stores	O
and	O
questionable	O
support	O
from	O
Sharp	O
and	O
third-party	O
vendors	O
.	O
</s>
