<s>
A	O
mobile	B-Application
data	I-Application
terminal	I-Application
(	O
MDT	O
)	O
or	O
mobile	O
digital	O
computer	O
(	O
MDC	O
)	O
is	O
a	O
computerized	O
device	O
used	O
in	O
emergency	O
services	O
,	O
public	O
transport	O
,	O
taxicabs	O
,	O
package	O
delivery	O
,	O
roadside	O
assistance	O
,	O
and	O
logistics	O
,	O
among	O
other	O
fields	O
,	O
to	O
communicate	O
with	O
a	O
central	O
dispatcher	O
.	O
</s>
<s>
Mobile	B-Application
data	I-Application
terminals	I-Application
feature	O
a	O
screen	B-Device
on	O
which	O
to	O
view	O
information	O
and	O
a	O
keyboard	B-Device
or	O
keypad	B-Device
for	O
entering	O
information	O
,	O
and	O
may	O
be	O
connected	O
to	O
various	O
peripheral	O
devices	O
.	O
</s>
<s>
MDTs	O
may	O
be	O
simple	O
display	O
and	O
keypad	B-Device
units	O
,	O
intended	O
to	O
be	O
connected	O
to	O
a	O
separate	O
black-box	O
or	O
AVL	O
(	O
see	O
below	O
)	O
computer	O
.	O
</s>
<s>
While	O
MDTs	O
were	O
originally	O
thin	B-Device
clients	I-Device
,	O
most	O
have	O
been	O
replaced	O
with	O
fully	O
functional	O
PC	O
hardware	O
,	O
known	O
as	O
MDCs	O
(	O
Mobile	O
Digital	O
Computers	O
)	O
.	O
</s>
<s>
While	O
applications	O
like	O
taxi	O
and	O
package	O
delivery	O
often	O
still	O
use	O
custom	O
designed	O
terminals	O
,	O
the	O
majority	O
of	O
CAD	O
systems	O
have	O
switched	O
to	O
ruggedized	B-Device
laptops	I-Device
and	O
Wide-Area	O
Wireless	O
IP	O
communications	O
,	O
utilizing	O
the	O
Internet	O
or	O
private	O
IP	O
networks	O
connected	O
to	O
and	O
over	O
it	O
.	O
</s>
<s>
For	O
industrial	O
applications	O
such	O
as	O
commercial	O
trucking	O
,	O
GIS	B-Application
,	O
agriculture	O
,	O
mobile	O
asset	O
management	O
,	O
and	O
other	O
industries	O
,	O
custom	O
electronic	O
hardware	O
is	O
still	O
preferred	O
.	O
</s>
<s>
MDT	O
solutions	O
that	O
are	O
based	O
on	O
ruggedized	B-Device
consumer	O
products	O
or	O
consumer	O
available	O
software	O
will	O
typically	O
not	O
have	O
the	O
life	O
cycle	O
duration	O
expected	O
in	O
industrial	O
applications	O
,	O
over	O
5	O
years	O
.	O
</s>
<s>
Display	B-Device
technology	I-Device
specific	O
to	O
viewing	O
conditions	O
for	O
the	O
intended	O
industry	O
(	O
LCD	B-Device
,	O
TFT	B-Device
LCD	I-Device
,	O
Vacuum	B-General_Concept
fluorescent	I-General_Concept
display	I-General_Concept
,	O
CSTN	B-General_Concept
)	O
.	O
</s>
<s>
Mobile	B-Application
data	I-Application
terminals	I-Application
are	O
often	O
used	O
in	O
conjunction	O
with	O
a	O
"	O
black	O
box	O
"	O
that	O
contains	O
a	O
GPS	O
receiver	O
,	O
cell	O
phone	O
transceiver	O
,	O
other	O
radio	O
devices	O
,	O
or	O
interfaces	O
to	O
industry-specific	O
equipment	O
.	O
</s>
<s>
The	O
mobile	B-Application
data	I-Application
terminal	I-Application
(	O
MDT	O
)	O
allows	O
for	O
routing	O
,	O
receiving	O
and	O
display	O
of	O
data	O
between	O
control	O
room	O
and	O
operational	O
vehicles	O
allowing	O
ambulance	O
crews	O
to	O
respond	O
quickly	O
and	O
appropriately	O
to	O
calls	O
.	O
</s>
