<s>
In	O
computer	B-General_Concept
science	I-General_Concept
,	O
a	O
typed	B-Language
assembly	I-Language
language	I-Language
(	O
TAL	O
)	O
is	O
an	O
assembly	B-Language
language	I-Language
that	O
is	O
extended	O
to	O
include	O
a	O
method	O
of	O
annotating	O
the	O
datatype	O
of	O
each	O
value	O
that	O
is	O
manipulated	O
by	O
the	O
code	O
.	O
</s>
<s>
These	O
annotations	O
can	O
then	O
be	O
used	O
by	O
a	O
program	O
(	O
type	O
checker	O
)	O
that	O
processes	O
the	O
assembly	B-Language
language	I-Language
code	O
in	O
order	O
to	O
analyse	O
how	O
it	O
will	O
behave	O
when	O
it	O
is	O
executed	O
.	O
</s>
<s>
Specifically	O
,	O
such	O
a	O
type	O
checker	O
can	O
be	O
used	O
to	O
prove	O
the	O
type	B-Language
safety	I-Language
of	O
code	O
that	O
meets	O
the	O
criteria	O
of	O
some	O
appropriate	O
type	O
system	O
.	O
</s>
<s>
Typed	B-Language
assembly	I-Language
languages	I-Language
usually	O
include	O
a	O
high-level	O
memory	O
management	O
system	O
based	O
on	O
garbage	B-General_Concept
collection	I-General_Concept
.	O
</s>
<s>
A	O
typed	B-Language
assembly	I-Language
language	I-Language
with	O
a	O
suitably	O
expressive	O
type	O
system	O
can	O
be	O
used	O
to	O
enable	O
the	O
safe	O
execution	O
of	O
untrusted	O
code	O
without	O
using	O
an	O
intermediate	O
representation	O
like	O
bytecode	O
,	O
allowing	O
features	O
similar	O
to	O
those	O
currently	O
provided	O
by	O
virtual	O
machine	O
environments	O
like	O
Java	B-Device
and	O
.NET	B-Application
.	O
</s>
