<s>
PC12	O
by	O
Artronix	O
was	O
a	O
minicomputer	B-Architecture
built	O
with	O
7400-series	O
TTL	O
technology	O
and	O
ferrite	O
core	O
memory	O
.	O
</s>
<s>
For	O
mass	B-Device
storage	I-Device
it	O
had	O
a	O
LINCtape	O
dual	O
unit	O
.	O
</s>
<s>
There	O
was	O
an	O
optional	O
plotter	B-Operating_System
to	O
draw	O
the	O
results	O
.	O
</s>
<s>
To	O
speed	O
up	O
the	O
calculations	O
it	O
had	O
a	O
separate	O
floating	B-General_Concept
point	I-General_Concept
unit	I-General_Concept
that	O
interfaced	O
like	O
any	O
other	O
peripheral	O
.	O
</s>
<s>
It	O
ran	O
an	O
operating	B-General_Concept
system	I-General_Concept
LAP6-PC	O
with	O
support	O
for	O
assembly	B-Language
language	I-Language
and	O
Fortran	B-Application
programming	B-General_Concept
and	O
usually	O
came	O
with	O
end	O
user	O
software	O
for	O
Radiation	O
Treatment	O
Planning	O
(	O
RTP	O
)	O
,	O
for	O
use	O
by	O
a	O
radiation	O
therapist	O
or	O
radiation	O
oncologist	O
,	O
and	O
Hospital	O
Patient	O
Records	O
.	O
</s>
<s>
With	O
extended	O
hardware	O
it	O
became	O
a	O
multiuser	O
system	O
running	O
MUMPS	B-Language
.	O
</s>
<s>
Latter	O
additions	O
included	O
an	O
8	B-Device
"	I-Device
floppy	B-Device
disk	I-Device
and	O
hard	O
disk	O
of	O
larger	O
capacity	O
.	O
</s>
<s>
A	O
1974	O
paper	O
describes	O
the	O
use	O
of	O
a	O
PC-12	O
as	O
a	O
frontend	O
to	O
an	O
IBM	B-Application
360	I-Application
mainframe	O
in	O
radiation	O
therapy	O
,	O
in	O
which	O
the	O
PC-12	O
acted	O
as	O
the	O
user	O
interface	O
while	O
the	O
mainframe	O
is	O
used	O
to	O
perform	O
complex	O
calculations	O
.	O
</s>
