<s>
The	O
HP	O
Xpander	O
(	O
F1903A	O
)	O
aka	O
"	O
Endeavour	O
"	O
was	O
to	O
be	O
Hewlett-Packard	O
'	O
s	O
newest	O
graphing	B-Application
calculator	I-Application
in	O
2002	O
,	O
but	O
the	O
project	O
was	O
cancelled	O
in	O
November	O
2001	O
months	O
before	O
it	O
was	O
scheduled	O
to	O
go	O
into	O
production	O
.	O
</s>
<s>
It	O
had	O
both	O
a	O
keyboard	O
and	O
a	O
pen-based	O
interface	O
,	O
measured	O
162.6mm	O
by	O
88.9mm	O
by	O
22.9mm	O
,	O
with	O
a	O
large	O
grayscale	O
screen	O
,	O
and	O
ran	O
on	O
two	O
rechargeable	B-Architecture
AA	O
batteries	O
.	O
</s>
<s>
It	O
had	O
a	O
semi-translucent	O
green	O
cover	O
on	O
a	O
gray	O
case	O
and	O
an	O
expansion	B-Device
slot	I-Device
.	O
</s>
<s>
The	O
underlying	O
operating	O
system	O
was	O
Windows	B-Operating_System
CE	I-Operating_System
3.0	O
.	O
</s>
<s>
One	O
of	O
the	O
obvious	O
omissions	O
in	O
the	O
Xpander	O
was	O
the	O
lack	O
of	O
a	O
computer	B-General_Concept
algebra	I-General_Concept
system	I-General_Concept
(	O
CAS	O
)	O
.	O
</s>
<s>
After	O
discontinuing	O
the	O
Xpander	O
,	O
HP	O
decided	O
to	O
release	O
the	O
Xpander	O
software	O
,	O
named	O
the	O
Math	O
Xpander	O
,	O
as	O
a	O
free-of-charge	O
application	O
that	O
ran	O
on	O
Windows	O
CE-based	O
Pocket	B-Device
PC	I-Device
devices	O
.	O
</s>
