<s>
The	O
Voice	B-Device
Navigator	I-Device
was	O
the	O
first	O
voice	B-Application
recognition	I-Application
device	O
for	O
command	O
and	O
control	O
of	O
a	O
graphical	B-Application
user	I-Application
interface	I-Application
(	O
Patent	O
no	O
.	O
</s>
<s>
The	O
system	O
was	O
developed	O
by	O
Articulate	O
Systems	O
,	O
Inc	O
.	O
(	O
founded	O
in	O
1986	O
)	O
originally	O
designed	O
for	O
the	O
Apple	B-Device
Macintosh	I-Device
Plus	I-Device
and	O
released	O
in	O
1989	O
.	O
</s>
<s>
Subsequent	O
versions	O
were	O
created	O
for	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
Articulate	O
Systems	O
,	O
Inc	O
.	O
was	O
acquired	O
by	O
Dragon	B-Application
Systems	I-Application
in	O
1998	O
.	O
</s>
<s>
A	O
software-only	O
version	O
was	O
introduced	O
in	O
1992	O
for	O
computers	O
with	O
built-in	O
microphone	O
and	O
adequate	O
microprocessor	O
(	O
Mac	B-Device
IIsi	I-Device
,	O
Mac	B-Device
Quadra	I-Device
AV	O
)	O
.	O
</s>
<s>
The	O
hardware	O
consisted	O
of	O
a	O
TMS320	B-Architecture
digital	O
signal	O
processor	O
,	O
a	O
Rockwell	O
fax	O
modem	O
and	O
a	O
SCSI	B-Architecture
interface	O
as	O
well	O
as	O
a	O
headset	O
microphone	O
.	O
</s>
<s>
The	O
software	O
consisted	O
of	O
Dragon	B-Application
Systems	I-Application
(	O
acquired	O
by	O
Nuance	O
)	O
speaker	O
dependent	O
,	O
discrete	O
utterance	O
,	O
voice	B-Application
recognition	I-Application
driver	O
and	O
Articulate	O
Systems	O
patented	O
voice	O
control	O
technology	O
.	O
</s>
<s>
The	O
software	O
enabled	O
voice	O
control	O
of	O
any	O
Macintosh	O
application	O
using	O
context	O
dependent	O
synchronised	O
grammars	O
derived	O
from	O
the	O
current	O
processes	O
and	O
operating	O
system	O
data	O
structures	O
(	O
menus	O
,	O
windows	O
,	O
controls	O
)	O
and	O
events	O
(	O
mouse	O
,	O
key	O
and	O
AppleEvents	B-Operating_System
)	O
.	O
</s>
<s>
The	O
system	O
was	O
designed	O
to	O
be	O
extensible	O
using	O
a	O
plug-in	B-Application
architecture	O
(	O
voice	O
extensions	O
)	O
for	O
custom	O
functionality	O
and	O
included	O
a	O
software	B-Application
developer	I-Application
kit	I-Application
(	O
SDK	O
)	O
for	O
third-party	O
applications	O
.	O
</s>
<s>
Voice	B-Device
Navigator	I-Device
-	O
The	O
original	O
version	O
with	O
fax	O
modem	O
capability	O
.	O
</s>
<s>
Voice	B-Device
Navigator	I-Device
II	O
-	O
A	O
low	O
cost	O
version	O
with	O
desktop	O
microphone	O
.	O
</s>
<s>
Voice	B-Device
Navigator	I-Device
SW	O
-	O
A	O
software-only	O
version	O
for	O
Macs	O
with	O
built-in	O
microphones	O
.	O
</s>
<s>
Voice	B-Device
Navigator	I-Device
SDK	O
-	O
The	O
software	B-Application
developer	I-Application
kit	I-Application
for	O
third-party	O
applications	O
.	O
</s>
<s>
PowerSecretary	O
-	O
Voice	B-Application
command	I-Application
and	O
control	O
with	O
dictation	O
capability	O
.	O
</s>
