<s>
TilEm	B-Application
is	O
an	O
emulator	B-Application
that	O
simulates	O
certain	O
Texas	O
Instruments	O
calculators	O
on	O
a	O
generic	O
computer	O
.	O
</s>
<s>
It	O
is	O
similar	O
to	O
TiEmu	B-Application
,	O
uses	O
GTK+	B-Application
,	O
and	O
works	O
on	O
many	O
different	O
operating	O
systems	O
like	O
Linux/Unix	O
,	O
FreeBSD	B-Operating_System
,	O
32-bit	O
Microsoft	B-Application
Windows	I-Application
and	O
so	O
on	O
.	O
</s>
<s>
If	O
you	O
have	O
a	O
copy	O
of	O
the	O
information	O
in	O
the	O
ROM	B-Device
from	O
one	O
of	O
the	O
ZiLOG	B-General_Concept
Z80	I-General_Concept
series	O
Texas	O
Instruments	O
Graphing	B-Application
Calculators	I-Application
(	O
TI-82	B-Device
,	O
TI-83	B-Device
series	I-Device
,	O
TI-84	B-Device
Plus	I-Device
series	I-Device
,	O
TI-85	B-Device
,	O
TI-86	B-Device
,	O
and	O
TI-81	B-Device
)	O
,	O
TilEm	B-Application
will	O
emulate	O
the	O
behavior	O
of	O
the	O
calculator	O
without	O
requiring	O
the	O
actual	O
calculator	O
hardware	O
.	O
</s>
<s>
TilEm	B-Application
is	O
licensed	O
under	O
the	O
GPL	B-License
License	I-License
.	O
</s>
