<s>
The	O
TI-30	B-Device
is	O
a	O
scientific	O
calculator	O
manufactured	O
by	O
Texas	O
Instruments	O
,	O
the	O
first	O
model	O
of	O
which	O
was	O
introduced	O
in	O
1976	O
.	O
</s>
<s>
While	O
the	O
original	O
TI-30	B-Device
was	O
discontinued	O
in	O
1983	O
after	O
several	O
design	O
revisions	O
,	O
TI	O
maintains	O
the	O
TI-30	B-Device
designation	O
as	O
a	O
branding	O
for	O
its	O
low	O
and	O
mid-range	O
scientific	O
calculators	O
.	O
</s>
<s>
The	O
original	O
TI-30	B-Device
was	O
notable	O
for	O
its	O
very	O
low	O
cost	O
for	O
the	O
time	O
,	O
around	O
US$25	O
.	O
</s>
<s>
The	O
Casio	O
FX-20	O
,	O
another	O
popular	O
scientific	O
calculator	O
,	O
sold	O
for	O
roughly	O
double	O
the	O
price	O
of	O
the	O
TI-30	B-Device
.	O
</s>
<s>
The	O
TI-30	B-Device
sold	O
for	O
less	O
than	O
the	O
cost	O
of	O
a	O
professional-grade	O
slide	O
rule	O
.	O
</s>
<s>
The	O
TI-30	B-Device
sold	O
an	O
estimated	O
15million	O
units	O
during	O
its	O
lifespan	O
from	O
1976	O
–	O
1983	O
.	O
</s>
<s>
The	O
original	O
TI-30	B-Device
,	O
a	O
cost-reduced	O
but	O
functionally	O
equivalent	O
version	O
of	O
TI	O
's	O
SR-40	O
unit	O
,	O
utilized	O
an	O
LED	O
display	O
,	O
was	O
powered	O
by	O
a	O
9-volt	B-Algorithm
battery	I-Algorithm
,	O
and	O
contained	O
nearly	O
all	O
of	O
its	O
functionality	O
in	O
one	O
chip	O
,	O
where	O
previous	O
calculators	O
used	O
many	O
discrete	O
components	O
.	O
</s>
<s>
The	O
TI-30	B-Device
could	O
perform	O
nearly	O
all	O
the	O
logarithmic	O
and	O
trigonometric	O
functions	O
of	O
an	O
HP-21	B-Device
,	O
its	O
primary	O
competition	O
at	O
the	O
time	O
.	O
</s>
<s>
Although	O
the	O
Texas	B-Device
Instruments	I-Device
SR-50	I-Device
pioneered	O
algebraic	O
notation	O
with	O
operation	O
precedence	O
in	O
1974	O
,	O
the	O
TI-30	B-Device
made	O
those	O
features	O
available	O
at	O
a	O
more	O
affordable	O
price	O
.	O
</s>
<s>
Early	O
production	O
TI-30	B-Device
units	O
(	O
c	O
.	O
1976	O
)	O
contained	O
a	O
logic	O
error	O
in	O
their	O
calculation	O
of	O
inverse	O
tangents	O
.	O
</s>
<s>
The	O
TI-30	B-Device
was	O
at	O
one	O
point	O
the	O
most	O
popular	O
scientific	O
calculator	O
for	O
junior	O
high	O
and	O
high	O
school	O
use	O
in	O
the	O
United	O
States	O
.	O
</s>
<s>
In	O
1980	O
,	O
Texas	O
Instruments	O
converted	O
the	O
TI-30	B-Device
to	O
use	O
a	O
liquid	B-Device
crystal	I-Device
display	I-Device
,	O
releasing	O
the	O
TI-30	B-Device
LCD	B-Device
in	O
Europe	O
and	O
the	O
TI-30	B-Device
II	O
a	O
year	O
later	O
in	O
the	O
U.S.	O
</s>
<s>
The	O
"	O
X	O
"	O
in	O
all	O
current	O
TI-30	B-Device
models	O
refers	O
to	O
the	O
addition	O
of	O
a	O
10+2	O
display	O
(	O
that	O
is	O
,	O
a	O
10	O
digit	O
mantissa	B-Algorithm
plus	O
a	O
2-digit	O
exponent	O
)	O
in	O
1993	O
;	O
with	O
the	O
addition	O
of	O
a	O
2-line	O
display	O
and	O
a	O
D-pad	B-Device
in	O
the	O
XIIS/XIIB	O
in	O
1999	O
,	O
the	O
TI-30	B-Device
line	O
split	O
in	O
2	O
,	O
with	O
the	O
TI-30Xa	O
becoming	O
TI	O
's	O
overall	O
entry-level	O
scientific	O
,	O
and	O
the	O
enhanced	O
XII	O
designs	O
offering	O
more	O
input	O
flexibility	O
to	O
the	O
user	O
.	O
</s>
<s>
The	O
MultiView	O
models	O
,	O
introduced	O
in	O
2006	O
and	O
2007	O
,	O
replace	O
the	O
2-line	O
display	O
with	O
a	O
dot	B-General_Concept
matrix	I-General_Concept
display	O
similar	O
to	O
a	O
graphing	B-Application
calculator	I-Application
,	O
and	O
move	O
many	O
of	O
the	O
functions	O
traditionally	O
placed	O
on	O
or	O
next	O
to	O
individual	O
calculator	O
keys	O
off	O
onto	O
menus	O
very	O
similar	O
to	O
those	O
used	O
on	O
the	O
popular	O
TI-83	B-Device
calculator	O
line	O
.	O
</s>
<s>
At	O
one	O
time	O
or	O
another	O
,	O
most	O
models	O
in	O
the	O
line	O
since	O
the	O
introduction	O
of	O
the	O
LCD	B-Device
models	O
have	O
been	O
available	O
in	O
both	O
solar	O
powered	O
and	O
battery	O
versions	O
;	O
the	O
Xa	O
retains	O
solar	O
power	O
only	O
on	O
models	O
sold	O
in	O
a	O
few	O
markets	O
in	O
Europe	O
,	O
while	O
the	O
XIIS	O
and	O
XS	O
MultiView	O
models	O
run	O
off	O
both	O
solar	O
and	O
battery	O
power	O
depending	O
on	O
available	O
ambient	O
light	O
.	O
</s>
<s>
The	O
earliest	O
model	O
,	O
however	O
,	O
uses	O
a	O
9	B-Algorithm
volt	I-Algorithm
battery	I-Algorithm
,	O
which	O
is	O
expected	O
to	O
last	O
for	O
approximately	O
20	O
hours	O
of	O
use	O
,	O
according	O
to	O
the	O
Owner	O
's	O
Manual	O
.	O
</s>
<s>
TI-30	B-Device
LCD	B-Device
(	O
1978	O
)	O
:	O
the	O
first	O
LCD	B-Device
version	O
.	O
</s>
<s>
TI-30	B-Device
replacement	O
free	O
of	O
charge	O
,	O
or	O
TI-31	O
Solar	O
with	O
10	O
,	O
-	O
DM	O
payment	O
.	O
</s>
<s>
TI-30	B-Device
SLR	O
(	O
1982	O
)	O
:	O
with	O
Toshiba	O
calculating	O
chip	O
.	O
</s>
<s>
TI-30X	B-Device
(	O
1993	O
)	O
:	O
the	O
X	O
signifies	O
an	O
expanded	O
10	O
digit	O
display	O
(	O
from	O
the	O
original	O
8	O
)	O
.	O
</s>
<s>
Currently	O
the	O
bottom	O
of	O
the	O
TI-30	B-Device
line	O
,	O
the	O
Xa	O
has	O
a	O
standard	O
one-line	O
,	O
10+2	O
digit	O
display	O
.	O
</s>
<s>
TI-30X	B-Device
IIS	O
and	O
TI-30X	B-Device
IIB	O
(	O
1998	O
)	O
:	O
added	O
a	O
two-line	O
,	O
scrollable	O
display	O
and	O
a	O
D-pad	B-Device
for	O
navigating	O
previous	O
results	O
.	O
</s>
<s>
TI-30XS	B-Device
and	O
TI-30XB	O
MultiView	O
(	O
2005	O
)	O
:	O
first	O
non-graphing	O
TI	O
calculators	O
with	O
a	O
dot-matrix	B-General_Concept
display	O
;	O
able	O
to	O
display	O
expressions	O
in	O
textbook-style	O
notation	O
.	O
</s>
<s>
Uses	O
a	O
command	O
syntax	O
similar	O
to	O
TI-BASIC	B-Language
,	O
but	O
with	O
no	O
programming	O
capability	O
.	O
</s>
<s>
TI-30X	B-Device
Pro	O
MultiView	O
and	O
TI-36X	O
Pro	O
(	O
2011	O
)	O
:	O
In	O
addition	O
to	O
the	O
features	O
TI-30XS	B-Device
and	O
TI-30XB	O
MultiView	O
,	O
it	O
features	O
a	O
solver	O
,	O
availability	O
to	O
calculate	O
matrices	O
,	O
vectors	O
,	O
complex	O
numbers	O
and	O
convert	O
different	O
units	O
.	O
</s>
<s>
The	O
TI-36X	O
Pro	O
is	O
the	O
American	O
and	O
international	O
version	O
of	O
the	O
European	O
model	O
,	O
the	O
TI-30X	B-Device
Pro	O
MultiView	O
.	O
</s>
<s>
The	O
TI-30X	B-Device
Pro	O
MultiView	O
was	O
released	O
in	O
2010	O
and	O
then	O
promptly	O
recalled	O
because	O
of	O
programming	O
errors	O
.	O
</s>
<s>
TI-30X	B-Device
Plus	O
MultiView	O
(	O
2015	O
)	O
:	O
a	O
TI-30X	B-Device
Pro	O
MultiView	O
without	O
certain	O
advanced	O
features	O
.	O
</s>
<s>
TI-30X	B-Device
Pro	O
MathPrint™	O
and	O
TI-30X	B-Device
Plus	O
MathPrint™	O
(	O
2018	O
)	O
:	O
successors	O
of	O
TI-30X	B-Device
Pro	O
MultiView/TI	O
-36X	O
Pro	O
and	O
TI-30X	B-Device
Plus	O
MultiView	O
.	O
</s>
