<s>
The	O
algorithmic	B-General_Concept
state	I-General_Concept
machine	I-General_Concept
(	O
ASM	O
)	O
method	O
is	O
a	O
method	O
for	O
designing	O
finite	B-Architecture
state	I-Architecture
machines	I-Architecture
(	O
FSMs	O
)	O
originally	O
developed	O
by	O
Thomas	O
E	O
.	O
Osborne	O
at	O
the	O
University	O
of	O
California	O
,	O
Berkeley	O
(	O
UCB	O
)	O
since	O
1960	O
,	O
introduced	O
to	O
and	O
implemented	O
at	O
Hewlett-Packard	O
in	O
1968	O
,	O
formalized	O
and	O
expanded	O
since	O
1967	O
and	O
written	O
about	O
by	O
Christopher	O
R	O
.	O
Clare	O
since	O
1970	O
.	O
</s>
<s>
The	O
ASM	O
diagram	O
is	O
like	O
a	O
state	B-Application
diagram	I-Application
but	O
more	O
structured	O
and	O
,	O
thus	O
,	O
easier	O
to	O
understand	O
.	O
</s>
<s>
An	O
ASM	B-General_Concept
chart	I-General_Concept
is	O
a	O
method	O
of	O
describing	O
the	O
sequential	O
operations	O
of	O
a	O
digital	O
system	O
.	O
</s>
<s>
Create	O
an	O
algorithm	O
,	O
using	O
pseudocode	B-Language
,	O
to	O
describe	O
the	O
desired	O
operation	O
of	O
the	O
device	O
.	O
</s>
<s>
Convert	O
the	O
pseudocode	B-Language
into	O
an	O
ASM	B-General_Concept
chart	I-General_Concept
.	O
</s>
<s>
Design	O
the	O
datapath	O
based	O
on	O
the	O
ASM	B-General_Concept
chart	I-General_Concept
.	O
</s>
<s>
Create	O
a	O
detailed	O
ASM	B-General_Concept
chart	I-General_Concept
based	O
on	O
the	O
datapath	O
.	O
</s>
<s>
Design	O
the	O
control	O
logic	O
based	O
on	O
the	O
detailed	O
ASM	B-General_Concept
chart	I-General_Concept
.	O
</s>
<s>
An	O
ASM	B-General_Concept
chart	I-General_Concept
consists	O
of	O
an	O
interconnection	O
of	O
four	O
types	O
of	O
basic	O
elements	O
:	O
state	O
name	O
,	O
state	O
box	O
,	O
decision	O
box	O
,	O
and	O
conditional	O
outputs	O
box	O
.	O
</s>
<s>
An	O
ASM	O
state	O
,	O
represented	O
as	O
a	O
rectangle	O
,	O
corresponds	O
to	O
one	O
state	O
of	O
a	O
regular	O
state	B-Application
diagram	I-Application
or	O
finite	B-Architecture
state	I-Architecture
machine	I-Architecture
.	O
</s>
<s>
The	O
Moore	B-General_Concept
type	O
outputs	O
are	O
listed	O
inside	O
the	O
box	O
.	O
</s>
<s>
The	O
condition	O
expression	O
contains	O
one	O
or	O
more	O
inputs	O
to	O
the	O
FSM	O
(	O
Finite	B-Architecture
State	I-Architecture
Machine	I-Architecture
)	O
.	O
</s>
<s>
Conditional	O
Output	O
Box	O
:	O
An	O
oval	O
denotes	O
the	O
output	O
signals	O
that	O
are	O
of	O
Mealy	B-General_Concept
type	O
.	O
</s>
<s>
Once	O
the	O
datapath	O
is	O
designed	O
,	O
the	O
ASM	B-General_Concept
chart	I-General_Concept
is	O
converted	O
to	O
a	O
detailed	O
ASM	B-General_Concept
chart	I-General_Concept
.	O
</s>
