<s>
The	O
Architecture	B-Architecture
Analysis	I-Architecture
&	I-Architecture
Design	I-Architecture
Language	I-Architecture
(	O
AADL	O
)	O
is	O
an	O
architecture	B-Architecture
description	I-Architecture
language	I-Architecture
standardized	O
by	O
SAE	O
.	O
</s>
<s>
AADL	O
was	O
first	O
developed	O
in	O
the	O
field	O
of	O
avionics	O
,	O
and	O
was	O
known	O
formerly	O
as	O
the	O
Avionics	B-Architecture
Architecture	I-Architecture
Description	I-Architecture
Language	I-Architecture
.	O
</s>
<s>
The	O
Architecture	B-Architecture
Analysis	I-Architecture
&	I-Architecture
Design	I-Architecture
Language	I-Architecture
is	O
derived	O
from	O
MetaH	O
,	O
an	O
architecture	B-Architecture
description	I-Architecture
language	I-Architecture
made	O
by	O
the	O
Advanced	O
Technology	O
Center	O
of	O
Honeywell	O
.	O
</s>
<s>
AADL	O
is	O
used	O
to	O
model	O
the	O
software	B-Architecture
and	O
hardware	B-Architecture
architecture	O
of	O
an	O
embedded	B-Architecture
,	O
real-time	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
Due	O
to	O
its	O
emphasis	O
on	O
the	O
embedded	B-Architecture
domain	O
,	O
AADL	O
contains	O
constructs	O
for	O
modeling	O
both	O
software	B-Architecture
and	O
hardware	B-Architecture
components	O
(	O
with	O
the	O
hardware	B-Architecture
components	O
named	O
"	O
execution	O
platform	O
"	O
components	O
within	O
the	O
standard	O
)	O
.	O
</s>
<s>
This	O
architecture	O
model	O
can	O
then	O
be	O
used	O
either	O
as	O
a	O
design	O
documentation	O
,	O
for	O
analyses	O
(	O
such	O
as	O
schedulability	O
and	O
flow	O
control	O
)	O
or	O
for	O
code	O
generation	O
(	O
of	O
the	O
software	B-Architecture
portion	O
)	O
,	O
like	O
UML	B-Language
.	O
</s>
<s>
AADL	O
is	O
defined	O
by	O
a	O
core	O
language	O
that	O
defines	O
a	O
single	O
notation	O
for	O
both	O
system	O
and	O
software	B-Architecture
aspects	O
.	O
</s>
