<s>
Basic/Four	O
is	O
a	O
variety	O
of	O
Business	B-Language
Basic	I-Language
which	O
originally	O
ran	O
on	O
computers	O
of	O
the	O
same	O
name	O
introduced	O
in	O
1971	O
.	O
</s>
<s>
The	O
company	O
that	O
produced	O
the	O
system	O
,	O
Management	O
Assistance	O
,	O
Inc.	O
,	O
was	O
later	O
known	O
as	O
Basic/Four	O
Corporation	O
,	O
MAI	B-Language
Basic	I-Language
Four	I-Language
,	O
Inc.	O
,	O
and	O
MAI	B-Language
Basic	I-Language
Four	I-Language
Information	O
Systems	O
.	O
</s>
<s>
Basic/Four	O
sold	O
small	O
business	O
minicomputers	B-Architecture
that	O
were	O
assembled	O
from	O
Microdata	O
Corporation	O
CPUs	O
.	O
</s>
<s>
MAI	B-Language
Basic	I-Language
Four	I-Language
Business	B-Language
Basic	I-Language
was	O
one	O
of	O
the	O
first	O
commercially	O
available	O
business	B-Language
BASIC	I-Language
interpreters	O
.	O
</s>
<s>
MAI	B-Language
Basic	I-Language
Four	I-Language
(	O
the	O
company	O
)	O
originally	O
sold	O
minicomputers	B-Architecture
,	O
but	O
later	O
offered	O
superminicomputers	B-Device
and	O
microcomputers	B-Architecture
.	O
</s>
<s>
The	O
computers	O
ran	O
an	O
operating	O
system	O
with	O
the	O
BASIC	B-Language
interpreter	I-Language
integrated	O
.	O
</s>
<s>
The	O
BASIC	B-Language
interpreter	I-Language
was	O
written	O
in	O
TREE-META	B-Application
.	O
</s>
<s>
In	O
the	O
mid-1980s	O
,	O
the	O
company	O
released	O
accounting	O
software	O
for	O
third-party	O
microcomputers	B-Architecture
.	O
</s>
<s>
In	O
1988	O
,	O
it	O
released	O
its	O
own	O
80286-based	O
workstation	O
.	O
</s>
