<s>
The	O
Sharp	B-Device
PC-E500S	I-Device
was	O
a	O
1995	O
pocket	B-Device
computer	I-Device
by	O
Sharp	O
Corporation	O
and	O
was	O
the	O
successor	O
to	O
the	O
1989	O
PC-E500	O
model	O
,	O
featuring	O
a	O
2.304MHz	O
CMOS	B-Device
CPU	B-Device
.	O
</s>
<s>
It	O
came	O
with	O
32KB	O
of	O
RAM	B-Architecture
which	O
could	O
be	O
upgraded	O
to	O
96KB	O
using	O
memory	O
expansion	O
cards	O
.	O
</s>
<s>
The	O
monochrome	O
LCD	B-Device
had	O
240×32	O
pixels	B-Algorithm
which	O
could	O
display	O
four	O
lines	O
with	O
40	O
characters	O
per	O
line	O
as	O
well	O
as	O
graphics	O
.	O
</s>
<s>
The	O
256KB	O
system	O
ROM	B-Device
the	O
contained	O
the	O
BIOS	O
,	O
a	O
diagnostic	O
suite	O
,	O
and	O
the	O
BASIC	O
interpreter	B-Application
used	O
to	O
program	O
the	O
device	O
.	O
</s>
<s>
The	O
Sharp	B-Device
PC-E500	I-Device
series	O
could	O
store	O
data	O
and	O
programs	O
on	O
memory	O
expansion	O
cards	O
as	O
well	O
as	O
the	O
main	O
RAM	B-Architecture
.	O
</s>
<s>
These	O
cards	O
used	O
a	O
CR1616	B-Algorithm
lithium	O
battery	O
for	O
memory	O
backup	O
.	O
</s>
<s>
The	O
RAM	B-Architecture
card	O
could	O
be	O
appended	O
to	O
the	O
system	O
memory	O
,	O
replace	O
the	O
system	O
memory	O
or	O
act	O
as	O
a	O
separate	O
space	O
to	O
be	O
used	O
as	O
a	O
RAM	B-Architecture
drive	O
(	O
F	O
:	O
)	O
.	O
</s>
<s>
The	O
main	O
memory	O
could	O
also	O
be	O
partitioned	O
off	O
to	O
a	O
RAM	B-Architecture
drive	O
(	O
E	O
:	O
)	O
.	O
</s>
<s>
The	O
PC-E500S	O
had	O
a	O
weight	O
of	O
340g	O
(	O
with	O
batteries	O
)	O
and	O
was	O
powered	O
by	O
four	O
AAA	B-Algorithm
batteries	I-Algorithm
.	O
</s>
