<s>
The	O
Casio	B-Device
ClassPad	I-Device
300	I-Device
,	O
ClassPad	B-Device
330	O
and	O
fx-CP400	O
are	O
stylus	O
based	O
touch-screen	O
graphing	B-Application
calculators	I-Application
.	O
</s>
<s>
A	O
large	O
160x240	O
pixel	B-Algorithm
LCD	B-Device
touch	O
screen	O
enables	O
stylus-based	O
operation	O
.	O
</s>
<s>
It	O
resembles	O
Casio	O
's	O
earlier	O
Pocket	B-Application
Viewer	I-Application
line	O
.	O
</s>
<s>
HP	O
and	O
Texas	O
Instruments	O
attempted	O
to	O
release	O
similar	O
pen	O
based	O
calculators	B-Application
(	O
the	O
HP	B-Operating_System
Xpander	I-Operating_System
and	O
(	O
see	O
TI	B-Application
PLT	I-Application
SHH1	I-Application
)	O
,	O
but	O
both	O
were	O
cancelled	O
before	O
release	O
to	O
the	O
market	O
.	O
</s>
<s>
The	O
ClassPad	B-Device
300	I-Device
allows	O
input	O
of	O
expressions	O
,	O
and	O
displays	O
them	O
as	O
they	O
appear	O
in	O
a	O
textbook	O
.	O
</s>
<s>
Factorization	O
of	O
expressions	O
,	O
calculation	O
of	O
limit	O
values	O
of	O
functions	O
,	O
and	O
other	O
operations	O
can	O
be	O
performed	O
while	O
viewing	O
the	O
results	O
on	O
a	O
large	O
LCD	B-Device
screen	I-Device
.	O
</s>
<s>
It	O
also	O
comes	O
with	O
graphing	B-Application
tools	O
for	O
3D	O
graphing	B-Application
and	O
drawing	O
of	O
geometric	O
figures	O
.	O
</s>
<s>
In	O
the	O
United	O
States	O
the	O
ClassPad	B-Device
series	O
is	O
banned	O
from	O
standardized	O
tests	O
including	O
the	O
SAT	O
,	O
the	O
ACT	O
,	O
and	O
the	O
AP	O
Calculus	O
test	O
,	O
due	O
to	O
its	O
virtual	O
QWERTY	O
keyboard	O
and	O
stylus	O
usage	O
.	O
</s>
<s>
While	O
almost	O
entirely	O
identical	O
to	O
the	O
fx-CP400	O
,	O
its	O
removal	O
of	O
the	O
QWERTY	O
keyboards	O
means	O
it	O
is	O
included	O
in	O
the	O
list	O
of	O
allowed	O
calculators	B-Application
on	O
American	O
standardized	O
exams	O
,	O
including	O
AP	O
and	O
SAT	O
.	O
</s>
<s>
During	O
1996	O
,	O
CASIO	O
worked	O
on	O
the	O
CAS	B-General_Concept
(	O
Computer	B-General_Concept
Algebra	I-General_Concept
System	I-General_Concept
)	O
and	O
studying	O
Geometry	O
.	O
</s>
<s>
The	O
CAS	B-General_Concept
was	O
first	O
used	O
in	O
the	O
Casio	O
CFX-9970G	O
then	O
the	O
Casio	O
Algebra	O
FX	O
2.0	O
,	O
and	O
later	O
formed	O
the	O
core	O
math	O
system	O
for	O
the	O
ClassPad	B-Device
.	O
</s>
<s>
In	O
2002	O
,	O
CASIO	O
completed	O
a	O
prototype	O
for	O
the	O
ClassPad	B-Device
.	O
</s>
<s>
The	O
data	O
transfer	O
and	O
emulator	O
software	O
later	O
merged	O
into	O
one	O
product	O
called	O
the	O
ClassPad	B-Device
Manager	I-Device
.	O
</s>
<s>
In	O
2003	O
and	O
2005	O
,	O
CASIO	O
released	O
respectively	O
their	O
first	O
and	O
second	O
product	O
:	O
the	O
ClassPad	B-Device
300	I-Device
with	O
4.5	O
MB	O
of	O
flash	O
memory	O
,	O
and	O
the	O
ClassPad	B-Device
300	I-Device
Plus	O
with	O
5.4	O
MB	O
of	O
flash	O
memory	O
and	O
other	O
improvements	O
.	O
</s>
<s>
In	O
2006	O
CASIO	O
released	O
OS	O
3.0	O
for	O
the	O
ClassPad	B-Device
.	O
</s>
<s>
The	O
2007	O
ClassPad	B-Device
was	O
called	O
the	O
330	O
series	O
,	O
but	O
was	O
distinguished	O
from	O
the	O
300	O
plus	O
only	O
by	O
its	O
having	O
OS	O
3.02	O
pre-installed	O
.	O
</s>
<s>
In	O
2008	O
CASIO	O
released	O
OS	O
3.03	O
for	O
the	O
ClassPad	B-Device
.	O
</s>
<s>
In	O
2009	O
CASIO	O
released	O
OS	O
3.04	O
for	O
the	O
ClassPad	B-Device
.	O
</s>
<s>
In	O
2010	O
CASIO	O
released	O
OS	O
3.05	O
for	O
the	O
ClassPad	B-Device
.	O
</s>
<s>
In	O
2011	O
CASIO	O
released	O
OS	O
3.06	O
for	O
the	O
ClassPad	B-Device
.	O
</s>
<s>
In	O
2012	O
CASIO	O
released	O
the	O
ClassPad	B-Device
330	O
Plus	O
featuring	O
a	O
faster	O
CPU	B-General_Concept
(	O
SuperH	O
4	O
)	O
and	O
the	O
calculator	B-Application
is	O
now	O
treated	O
as	O
a	O
regular	O
USB	O
mass	O
storage	O
device	O
.	O
</s>
<s>
In	O
December	O
2018	O
Casio	O
released	O
3.10.7000	O
for	O
the	O
ClassPad	B-Device
330	O
Plus	O
.	O
</s>
<s>
The	O
resolution	O
was	O
also	O
improved	O
,	O
to	O
320	O
×	O
528	O
pixels	B-Algorithm
.	O
</s>
<s>
The	O
CPU	B-General_Concept
is	O
a	O
SuperH	O
4	O
of	O
the	O
SH-7305	O
model	O
.	O
</s>
<s>
On	O
this	O
calculator	B-Application
,	O
integers	O
can	O
be	O
stored	O
up	O
to	O
22032	O
,	O
which	O
is	O
611	O
digits	O
long	O
.	O
</s>
<s>
The	O
calculators	B-Application
can	O
be	O
programmed	O
in	O
two	O
ways	O
.	O
</s>
<s>
The	O
Classpad	B-Device
comes	O
with	O
Casio	B-Device
BASIC	I-Device
,	O
a	O
built-in	O
BASIC-like	O
interpreted	B-Application
language	I-Application
,	O
allowing	O
the	O
user	O
to	O
create	O
programs	O
using	O
built-in	O
functionality	O
.	O
</s>
<s>
Add-ins	O
are	O
binary	O
programs	O
,	O
executing	O
directly	O
on	O
the	O
calculator	B-Application
's	O
CPU	B-General_Concept
.	O
</s>
<s>
Currently	O
there	O
is	O
no	O
SDK	O
version	O
compatible	O
with	O
the	O
new	O
Classpad	B-Device
330	O
Plus	O
or	O
the	O
fx-CP400	O
.	O
</s>
<s>
After	O
the	O
release	O
of	O
the	O
SDK	O
,	O
a	O
Lua	B-Language
interpreter	B-Application
plugin	O
(	O
CPlua	O
)	O
was	O
created	O
.	O
</s>
<s>
This	O
add-in	O
allows	O
users	O
to	O
develop	O
programs	O
and	O
games	O
in	O
Lua	B-Language
.	O
</s>
