<s>
A	O
handheld	B-Operating_System
personal	I-Operating_System
computer	I-Operating_System
(	O
PC	O
)	O
is	O
a	O
pocket-sized	B-Application
computer	I-Application
typically	O
built	O
around	O
a	O
clamshell	O
form	O
factor	O
and	O
is	O
significantly	O
smaller	O
than	O
any	O
standard	O
laptop	B-Device
computer	I-Device
,	O
but	O
based	O
on	O
the	O
same	O
principles	O
.	O
</s>
<s>
It	O
is	O
sometimes	O
referred	O
to	O
as	O
a	O
palmtop	B-Device
computer	I-Device
,	O
not	O
to	O
be	O
confused	O
with	O
Palmtop	B-Device
PC	I-Device
which	O
was	O
a	O
name	O
used	O
mainly	O
by	O
Hewlett-Packard	O
.	O
</s>
<s>
Most	O
handheld	B-Operating_System
PCs	I-Operating_System
use	O
an	O
operating	B-General_Concept
system	I-General_Concept
specifically	O
designed	O
for	O
mobile	O
use	O
.	O
</s>
<s>
Ultra-compact	O
laptops	B-Device
capable	O
of	O
running	O
common	O
x86-compatible	O
desktop	B-General_Concept
operating	I-General_Concept
systems	I-General_Concept
are	O
typically	O
classified	O
as	O
subnotebooks	B-Device
.	O
</s>
<s>
The	O
first	O
hand-held	O
device	O
compatible	O
with	O
desktop	O
IBM	O
personal	O
computers	O
of	O
the	O
time	O
was	O
the	O
Atari	B-Device
Portfolio	I-Device
of	O
1989	O
.	O
</s>
<s>
Other	O
early	O
models	O
were	O
the	B-Application
Poqet	I-Application
PC	I-Application
of	O
1989	O
and	O
the	O
Hewlett	O
Packard	O
HP	B-Device
95LX	I-Device
of	O
1991	O
which	O
run	O
the	O
MS-DOS	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
After	O
2000	O
the	O
handheld	B-Operating_System
PC	I-Operating_System
segment	O
practically	O
halted	O
,	O
replaced	O
by	O
other	O
forms	O
,	O
although	O
later	O
communicators	O
such	O
as	O
Nokia	B-Language
E90	I-Language
can	O
be	O
considered	O
to	O
be	O
of	O
the	O
same	O
class	O
.	O
</s>
<s>
The	O
name	O
Handheld	B-Operating_System
PC	I-Operating_System
was	O
used	O
by	O
Microsoft	O
from	O
1996	O
until	O
the	O
early	O
2000s	O
to	O
describe	O
a	O
category	O
of	O
small	O
computers	O
having	O
keyboards	B-Device
and	O
running	O
the	O
Windows	B-Operating_System
CE	I-Operating_System
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
The	O
Handheld	B-Operating_System
PC	I-Operating_System
(	O
with	O
capital	O
"	O
H	O
"	O
)	O
or	O
H/PC	B-Operating_System
for	O
short	O
was	O
the	O
official	O
name	O
of	O
a	O
hardware	O
design	O
for	O
personal	B-Application
digital	I-Application
assistant	I-Application
(	O
PDA	B-Application
)	O
devices	O
running	O
Windows	B-Operating_System
CE	I-Operating_System
.	O
</s>
<s>
The	O
intent	O
of	O
Windows	B-Operating_System
CE	I-Operating_System
was	O
to	O
provide	O
an	O
environment	O
for	O
applications	O
compatible	O
with	O
the	O
Microsoft	B-Application
Windows	I-Application
operating	I-Application
system	I-Application
,	O
on	O
processors	O
better	O
suited	O
to	O
low-power	O
operation	O
in	O
a	O
portable	O
device	O
.	O
</s>
<s>
It	O
provides	O
the	O
appointment	O
calendar	O
functions	O
usual	O
for	O
any	O
PDA	B-Application
.	O
</s>
<s>
Microsoft	O
was	O
wary	O
of	O
using	O
the	O
term	O
"	O
PDA	B-Application
"	O
for	O
the	O
Handheld	B-Operating_System
PC	I-Operating_System
.	O
</s>
<s>
To	O
be	O
classed	O
as	O
a	O
Windows	B-Operating_System
CE	I-Operating_System
Handheld	I-Operating_System
PC	I-Operating_System
,	O
the	O
device	O
must	O
:	O
</s>
<s>
Examples	O
of	O
Handheld	B-Operating_System
PC	I-Operating_System
devices	O
are	O
the	O
NEC	O
MobilePro	O
900c	O
,	O
HP	O
320LX	O
,	O
Sharp	O
Telios	O
,	O
HP	O
Jornada	O
720	O
,	O
IBM	O
WorkPad	O
Z50	O
,	O
and	O
Vadem	B-Operating_System
Clio	I-Operating_System
.	O
</s>
<s>
Also	O
included	O
are	O
tablet	B-Device
computers	I-Device
like	O
the	O
Fujitsu	O
PenCentra	O
130	O
,	O
and	O
even	O
communicators	O
like	O
the	O
late	O
Samsung	B-Application
NEXiO	O
S150	O
.	O
</s>
<s>
In	O
1998	O
Microsoft	O
released	O
the	O
Palm-size	B-Device
PC	I-Device
,	O
which	O
have	O
smaller	O
screen	B-Device
sizes	O
and	O
lack	O
keyboards	B-Device
compared	O
to	O
Handheld	B-Operating_System
PC	I-Operating_System
.	O
</s>
<s>
Palm-size	B-Device
PC	I-Device
became	O
Pocket	B-Device
PC	I-Device
in	O
2000	O
.	O
</s>
<s>
Due	O
to	O
limited	O
success	O
of	O
Handheld	B-Operating_System
PC	I-Operating_System
,	O
Microsoft	O
focused	O
more	O
on	O
the	O
keyboard-less	O
Pocket	B-Device
PC	I-Device
.	O
</s>
<s>
In	O
September	O
2000	O
,	O
the	O
updated	O
Handheld	B-Operating_System
PC	I-Operating_System
2000	O
was	O
announced	O
which	O
is	O
based	O
on	O
version	O
3.0	O
of	O
Windows	B-Operating_System
CE	I-Operating_System
.	O
</s>
<s>
Interest	O
in	O
the	O
form	O
factor	O
overall	O
quickly	O
evaporated	O
,	O
and	O
by	O
early	O
2002	O
Microsoft	O
were	O
no	O
longer	O
working	O
on	O
Handheld	B-Operating_System
PC	I-Operating_System
,	O
with	O
its	O
distinct	O
functionality	O
removed	O
from	O
version	O
4.0	O
of	O
Windows	B-Operating_System
CE	I-Operating_System
.	O
</s>
<s>
HP	O
and	O
Sharp	O
both	O
discontinued	O
their	O
Windows	B-Operating_System
CE	I-Operating_System
H/PCs	B-Operating_System
in	O
2002	O
,	O
while	O
NEC	O
was	O
last	O
to	O
leave	O
the	O
market	O
in	O
2005	O
.	O
</s>
