<s>
A	O
dot-matrix	B-General_Concept
display	I-General_Concept
is	O
a	O
low-cost	O
electronic	O
digital	B-Device
display	I-Device
device	I-Device
that	O
displays	O
information	O
on	O
machines	O
such	O
as	O
clocks	O
,	O
watches	O
,	O
calculators	O
,	O
and	O
many	O
other	O
devices	O
requiring	O
a	O
simple	O
alphanumeric	O
(	O
and/or	O
graphic	O
)	O
display	B-Device
device	I-Device
of	O
limited	O
resolution	O
.	O
</s>
<s>
The	O
display	O
consists	O
of	O
a	O
dot	B-General_Concept
matrix	I-General_Concept
of	O
lights	O
or	O
mechanical	O
indicators	O
arranged	O
in	O
a	O
rectangular	O
configuration	O
(	O
other	O
shapes	O
are	O
also	O
possible	O
,	O
although	O
not	O
common	O
)	O
such	O
that	O
by	O
switching	O
on	O
or	O
off	O
selected	O
lights	O
,	O
text	O
or	O
graphics	O
can	O
be	O
displayed	O
.	O
</s>
<s>
These	O
displays	O
are	O
normally	O
created	O
with	O
LCD	B-Device
,	O
OLED	B-Device
,	O
or	O
LED	O
lights	O
and	O
can	O
be	O
found	O
in	O
some	O
Thin	B-Device
Film	I-Device
Transistors	I-Device
.	O
</s>
<s>
The	O
Thin	B-Device
Film	I-Device
Transistors	I-Device
had	O
an	O
active	O
display	O
which	O
allows	O
the	O
dot	B-General_Concept
matrix	I-General_Concept
to	O
display	O
different	O
pixels	O
with	O
different	O
colors	O
at	O
the	O
same	O
time	O
.	O
</s>
<s>
A	O
dot	B-General_Concept
matrix	I-General_Concept
controller	O
converts	O
instructions	O
from	O
a	O
processor	O
into	O
signals	O
that	O
turn	O
on	O
or	O
off	O
indicator	O
elements	O
in	O
the	O
matrix	O
so	O
that	O
the	O
required	O
display	O
is	O
produced	O
.	O
</s>
<s>
The	O
dot-matrix	B-General_Concept
display	I-General_Concept
is	O
also	O
known	O
by	O
the	O
obsolete	O
term	O
"	O
punktmatrix	O
display	O
"	O
(	O
German	O
for	O
point-matrix	O
)	O
due	O
to	O
the	O
dot	B-General_Concept
matrix	I-General_Concept
being	O
created	O
in	O
Germany	O
by	O
Rudolf	O
Hell	O
in	O
1925	O
.	O
</s>
<s>
Japan	O
and	O
America	O
were	O
using	O
the	O
LCD	B-Device
matrices	O
to	O
develop	O
Casio	O
TVs	O
from	O
1984	O
to	O
2000	O
creating	O
and	O
experimenting	O
with	O
different	O
display	O
setups	O
.	O
</s>
<s>
In	O
the	O
1980s	O
,	O
dot-matrix	B-General_Concept
displays	I-General_Concept
were	O
introduced	O
into	O
several	O
technologies	O
including	O
computers	O
,	O
the	O
Game	B-Device
Boy	I-Device
,	O
and	O
television	B-Device
screens	I-Device
that	O
were	O
used	O
.	O
</s>
<s>
The	O
dot	B-General_Concept
matrix	I-General_Concept
displays	I-General_Concept
became	O
a	O
popular	O
public	O
technology	O
in	O
1991	O
America	O
when	O
the	O
company	O
Data	O
East	O
created	O
Checkpoint	O
(	O
pinball	O
)	O
machines	O
that	O
interested	O
the	O
public	O
.	O
</s>
<s>
Dot-matrix	B-General_Concept
displays	I-General_Concept
were	O
added	O
into	O
new	O
pieces	O
of	O
technology	O
as	O
a	O
background	O
part	O
of	O
LCD	B-Device
or	O
OLED	B-Device
displays	I-Device
as	O
the	O
technology	O
improved	O
.	O
</s>
<s>
Common	O
sizes	O
of	O
dot	B-General_Concept
matrix	I-General_Concept
displays	I-General_Concept
:	O
</s>
<s>
This	O
is	O
seen	O
on	O
most	O
graphic	B-Application
calculators	I-Application
,	O
such	O
as	O
Casio	O
calculators	O
or	O
TI-82	B-Device
and	O
superior	O
.	O
</s>
<s>
This	O
is	O
seen	O
on	O
the	O
TI-80	B-Device
calculator	O
as	O
a	O
"	O
pure	O
"	O
,	O
fixed-size	O
3×5	O
font	O
,	O
or	O
on	O
most	O
7×5	O
calculators	O
as	O
a	O
proportional	O
(	O
1×5	O
to	O
5×5	O
)	O
font	O
.	O
</s>
<s>
Dot	B-General_Concept
matrix	I-General_Concept
displays	I-General_Concept
of	O
sufficient	O
resolution	O
can	O
be	O
programmed	O
to	O
emulate	O
the	O
customary	O
seven-segment	B-General_Concept
numeral	O
patterns	O
.	O
</s>
