<s>
Between	O
1977	O
and	O
2000	O
,	O
Digital	O
Equipment	O
Corporation	O
(	O
DEC	O
)	O
produced	O
a	O
wide	O
range	O
of	O
computer	O
systems	O
under	O
the	O
VAX	B-Device
brand	O
,	O
all	O
based	O
on	O
various	O
implementations	O
of	O
the	O
DEC-proprietary	O
instruction	B-General_Concept
set	I-General_Concept
architecture	I-General_Concept
of	O
the	O
same	O
name	O
.	O
</s>
