<s>
A	O
dot	B-General_Concept
matrix	I-General_Concept
is	O
a	O
2-dimensional	O
patterned	O
array	B-Data_Structure
,	O
used	O
to	O
represent	O
characters	O
,	O
symbols	O
and	O
images	O
.	O
</s>
<s>
An	O
alternate	O
form	O
of	O
information	B-Device
display	I-Device
using	O
lines	O
and	O
curves	O
is	O
known	O
as	O
a	O
vector	B-General_Concept
display	I-General_Concept
,	O
was	O
used	O
with	O
early	O
computing	O
devices	O
such	O
as	O
air	B-Application
traffic	I-Application
control	I-Application
radar	O
displays	O
and	O
pen-based	O
plotters	B-Operating_System
but	O
is	O
no	O
longer	O
used	O
.	O
</s>
<s>
Electronic	O
vector	B-General_Concept
displays	I-General_Concept
were	O
typically	O
monochrome	O
only	O
,	O
and	O
either	O
leave	O
the	O
interiors	O
of	O
closed	O
vector	O
shapes	O
unfilled	O
,	O
or	O
perform	O
slow	O
,	O
time-consuming	O
and	O
often	O
non-uniform	O
shape-filling	O
,	O
as	O
on	O
pen-based	O
plotters	B-Operating_System
.	O
</s>
<s>
In	O
displays	O
,	O
the	O
dots	O
may	O
light	O
up	O
,	O
as	O
in	O
an	O
LED	O
,	O
CRT	B-Device
,	O
or	O
plasma	O
display	O
,	O
or	O
darken	O
,	O
as	O
in	O
an	O
LCD	B-Device
.	O
</s>
<s>
Although	O
the	O
output	O
of	O
modern	O
computers	O
is	O
generally	O
all	O
in	O
the	O
form	O
of	O
dot	O
matrices	O
(	O
technically	O
speaking	O
)	O
,	O
computers	O
may	O
internally	O
store	O
data	O
as	O
either	O
a	O
dot	B-General_Concept
matrix	I-General_Concept
or	O
as	O
a	O
vector	O
pattern	O
of	O
lines	O
and	O
curves	O
.	O
</s>
<s>
For	O
maximum	O
image	O
quality	O
using	O
only	O
dot	B-General_Concept
matrix	I-General_Concept
fonts	O
,	O
it	O
would	O
be	O
necessary	O
to	O
store	O
a	O
separate	O
dot	B-General_Concept
matrix	I-General_Concept
pattern	O
for	O
the	O
many	O
different	O
potential	O
point	O
sizes	O
that	O
might	O
be	O
used	O
.	O
</s>
<s>
Instead	O
,	O
a	O
single	O
group	O
of	O
vector	O
shapes	O
is	O
used	O
to	O
render	O
all	O
the	O
specific	O
dot	B-General_Concept
matrix	I-General_Concept
patterns	O
needed	O
for	O
the	O
current	O
display	O
or	O
printing	O
task	O
.	O
</s>
<s>
All	O
points	O
addressable	O
(	O
APA	O
)	O
,	O
or	O
pixel	B-Algorithm
addressable	O
,	O
in	O
the	O
context	O
of	O
a	O
dot	B-General_Concept
matrix	I-General_Concept
on	O
a	O
computer	B-Device
monitor	I-Device
or	O
any	O
display	B-Device
device	I-Device
consisting	O
of	O
a	O
pixel	B-Algorithm
array	B-Data_Structure
,	O
refers	O
to	O
an	O
arrangement	O
whereby	O
bits	O
or	O
cells	O
can	O
be	O
individually	O
manipulated	O
,	O
as	O
opposed	O
to	O
rewriting	O
the	O
whole	O
array	B-Data_Structure
,	O
or	O
regions	O
such	O
as	O
characters	O
,	O
every	O
time	O
a	O
change	O
is	O
needed	O
.	O
</s>
<s>
Generally	O
,	O
text	B-Application
modes	I-Application
are	O
not	O
all-points-addressable	O
,	O
whereas	O
graphics	O
modes	O
are	O
.	O
</s>
<s>
The	O
process	O
of	O
doing	O
dot	B-General_Concept
matrix	I-General_Concept
printing	O
can	O
involve	O
dot	B-General_Concept
matrix	I-General_Concept
printers	O
,	O
both	O
for	O
impact	O
and	O
non-impact	O
printers	O
.	O
</s>
<s>
Except	O
for	O
impact	O
dot	B-General_Concept
matrix	I-General_Concept
printers	O
,	O
it	O
is	O
not	O
customary	O
to	O
call	O
the	O
others	O
by	O
that	O
term	O
.	O
</s>
<s>
Printers	O
that	O
are	O
not	O
but	O
what	O
the	O
New	O
York	O
Times	O
calls	O
a	O
"	O
dot-matrix	B-General_Concept
impact	O
printer	O
"	O
are	O
not	O
called	O
dot	B-General_Concept
matrix	I-General_Concept
printers	O
.	O
</s>
<s>
First	O
the	O
information	O
to	O
be	O
printed	O
is	O
converted	O
into	O
a	O
dot	B-General_Concept
matrix	I-General_Concept
using	O
a	O
raster	B-Algorithm
image	I-Algorithm
processor	O
,	O
and	O
the	O
output	O
is	O
a	O
dot	B-General_Concept
matrix	I-General_Concept
referred	O
to	O
as	O
a	O
raster	B-Algorithm
image	I-Algorithm
,	O
which	O
is	O
a	O
complete	O
full-page	O
rendering	O
of	O
the	O
information	O
to	O
be	O
printed	O
.	O
</s>
<s>
Raster	B-Algorithm
image	I-Algorithm
processing	O
may	O
occur	O
in	O
either	O
the	O
printer	O
itself	O
using	O
a	O
page	O
description	O
language	O
such	O
as	O
Adobe	B-Language
Postscript	I-Language
,	O
or	O
may	O
be	O
performed	O
by	O
printer	O
driver	O
software	O
installed	O
on	O
the	O
user	O
's	O
computer	O
.	O
</s>
<s>
Early	O
1980s	O
impact	O
printers	O
used	O
a	O
simple	O
form	O
of	O
internal	O
raster	B-Algorithm
image	I-Algorithm
processing	O
,	O
using	O
low-resolution	O
built-in	O
bitmap	O
fonts	O
to	O
render	O
raw	O
character	O
data	O
sent	O
from	O
the	O
computer	O
,	O
and	O
only	O
capable	O
of	O
storing	O
enough	O
dot	B-General_Concept
matrix	I-General_Concept
data	O
for	O
one	O
printed	O
line	O
at	O
a	O
time	O
.	O
</s>
<s>
External	O
raster	B-Algorithm
image	I-Algorithm
processing	O
was	O
possible	O
such	O
as	O
to	O
print	O
a	O
graphical	O
image	O
,	O
but	O
was	O
commonly	O
extremely	O
slow	O
and	O
data	O
was	O
sent	O
one	O
line	O
at	O
a	O
time	O
to	O
the	O
impact	O
printer	O
.	O
</s>
<s>
Some	O
printers	O
are	O
capable	O
of	O
producing	O
smaller	O
dots	O
and	O
will	O
intermesh	O
the	O
small	O
dots	O
within	O
the	O
corners	O
larger	O
ones	O
for	O
antialiasing	B-Algorithm
.	O
</s>
<s>
A	O
dot	B-General_Concept
matrix	I-General_Concept
is	O
useful	O
for	O
marking	O
materials	O
other	O
than	O
paper	O
.	O
</s>
<s>
In	O
manufacturing	O
industry	O
,	O
many	O
product	O
marking	O
applications	O
use	O
dot	B-General_Concept
matrix	I-General_Concept
inkjet	O
or	O
impact	O
methods	O
.	O
</s>
<s>
This	O
can	O
also	O
be	O
used	O
to	O
print	O
2D	O
matrix	B-Architecture
codes	O
,	O
e.g.	O
</s>
<s>
An	O
LED	O
matrix	B-Architecture
or	O
LED	O
display	O
is	O
a	O
large	O
,	O
low-resolution	O
form	O
of	O
dot-matrix	B-General_Concept
display	I-General_Concept
,	O
useful	O
both	O
for	O
industrial	O
and	O
commercial	O
information	B-Device
displays	I-Device
as	O
well	O
as	O
for	O
hobbyist	O
human	O
–	O
machine	O
interfaces	O
.	O
</s>
<s>
It	O
consists	O
of	O
a	O
2-D	O
diode	B-General_Concept
matrix	I-General_Concept
with	O
their	O
cathodes	O
joined	O
in	O
rows	O
and	O
their	O
anodes	O
joined	O
in	O
columns	O
(	O
or	O
vice	O
versa	O
)	O
.	O
</s>
<s>
By	O
multiplexing	B-Architecture
,	O
scanning	O
across	O
rows	O
,	O
quickly	O
flashing	O
the	O
LEDs	O
on	O
and	O
off	O
,	O
it	O
is	O
possible	O
to	O
create	O
characters	O
or	O
pictures	O
to	O
display	O
information	O
to	O
the	O
user	O
.	O
</s>
<s>
The	O
primary	O
difference	O
between	O
a	O
common	O
LED	O
matrix	B-Architecture
and	O
an	O
OLED	B-Device
display	I-Device
is	O
the	O
large	O
,	O
low	O
resolution	O
dots	O
.	O
</s>
<s>
The	O
OLED	B-Device
monitor	O
functionally	O
works	O
the	O
same	O
,	O
except	O
there	O
are	O
many	O
times	O
more	O
dots	O
,	O
and	O
they	O
are	O
all	O
much	O
smaller	O
,	O
allowing	O
for	O
greater	O
detail	O
in	O
the	O
displayed	O
patterns	O
.	O
</s>
