<s>
The	O
12-bit	B-Device
ND812	B-Device
,	O
produced	O
by	O
Nuclear	O
Data	O
,	O
Inc.	O
,	O
was	O
a	O
commercial	O
minicomputer	B-Architecture
developed	O
for	O
the	O
scientific	O
computing	O
market	O
.	O
</s>
<s>
The	O
architecture	O
has	O
a	O
simple	O
programmed	O
I/O	O
bus	O
,	O
plus	O
a	O
DMA	B-General_Concept
channel	O
.	O
</s>
<s>
screens	O
with	O
a	O
light	B-Device
pen	I-Device
,	O
analog-to-digital	O
converters	O
,	O
digital-to-analog	O
converters	O
,	O
</s>
<s>
tape	O
drives	O
,	O
disk	B-Device
drives	I-Device
.	O
</s>
<s>
12	B-Device
bits	I-Device
in	O
a	O
cycle	O
.	O
</s>
<s>
can	O
be	O
attached	O
via	O
76	O
signal	O
connector	O
that	O
allows	O
for	O
direct	B-General_Concept
memory	I-General_Concept
access	I-General_Concept
by	O
peripherals	O
.	O
</s>
<s>
The	O
ND812	B-Device
did	O
not	O
have	O
an	O
operating	O
system	O
,	O
just	O
a	O
front	B-Device
panel	I-Device
and	O
run	O
and	O
halt	O
switches	O
.	O
</s>
<s>
assembler	O
,	O
symbolic	O
text	O
editor	O
,	O
NUTRAN	O
interpreter	O
,	O
and	O
disk-based	O
symbolic	O
text	O
editor	O
,	O
</s>
<s>
NUTRAN	O
,	O
a	O
conversational	O
,	O
FORTRAN-like	O
language	O
,	O
was	O
provided	O
.	O
</s>
