<s>
The	O
TI-86	B-Device
is	O
a	O
programmable	O
graphing	B-Application
calculator	I-Application
introduced	O
in	O
1996	O
which	O
was	O
produced	O
by	O
Texas	O
Instruments	O
.	O
</s>
<s>
The	O
TI-86	B-Device
uses	O
the	O
Zilog	B-General_Concept
Z80	I-General_Concept
microprocessor	B-Architecture
.	O
</s>
<s>
It	O
is	O
partially	O
backwards-compatible	B-General_Concept
with	O
its	O
predecessor	O
,	O
the	O
TI-85	B-Device
.	O
</s>
<s>
In	O
addition	O
to	O
having	O
a	O
larger	O
screen	O
than	O
the	O
TI-83	B-Device
,	O
the	O
TI-86	B-Device
also	O
allows	O
the	O
user	O
to	O
type	O
in	O
lower	O
case	O
and	O
Greek	O
letters	O
and	O
features	O
five	O
softkeys	O
,	O
which	O
improve	O
menu	O
navigation	O
and	O
can	O
be	O
programmed	O
by	O
the	O
user	O
for	O
quick	O
access	O
to	O
common	O
operations	O
such	O
as	O
decimal-to-fraction	O
conversion	O
.	O
</s>
<s>
The	O
calculator	O
also	O
handles	O
vectors	O
,	O
matrices	B-Architecture
and	O
complex	O
numbers	O
better	O
than	O
the	O
TI-83	B-Device
.	O
</s>
<s>
One	O
drawback	O
,	O
however	O
,	O
is	O
that	O
the	O
statistics	O
package	O
on	O
the	O
TI-83	B-Device
range	O
does	O
n't	O
come	O
preloaded	O
on	O
the	O
TI-86	B-Device
.	O
</s>
<s>
The	O
TI-86	B-Device
has	O
been	O
discontinued	O
.	O
</s>
