<s>
The	O
DATANET-30	B-Device
,	O
or	O
DN-30	O
for	O
short	O
,	O
was	O
a	O
computer	O
manufactured	O
by	O
General	O
Electric	O
designed	O
in	O
1961-1963	O
to	O
be	O
used	O
as	O
a	O
communications	O
computer	O
.	O
</s>
<s>
It	O
was	O
later	O
used	O
as	O
a	O
front-end	B-General_Concept
processor	I-General_Concept
for	O
data	O
communications	O
.	O
</s>
<s>
In	O
1964	O
,	O
acting	O
as	O
a	O
front	B-General_Concept
end	I-General_Concept
processor	I-General_Concept
along	O
with	O
an	O
interface	O
to	O
the	O
GE-225	B-Device
computer	O
,	O
a	O
professor	O
at	O
Dartmouth	O
College	O
developed	O
the	O
BASIC	O
programming	O
language	O
.	O
</s>
<s>
Multiple	O
teletype	O
units	O
were	O
attached	O
to	O
be	O
the	O
first	O
time-sharing	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
The	O
DATANET-30	B-Device
used	O
magnetic-core	O
memory	O
with	O
a	O
cycle	O
time	O
of	O
6.94μs	O
.	O
</s>
<s>
The	O
word	O
size	O
was	O
18	B-General_Concept
bits	I-General_Concept
and	O
memory	O
was	O
available	O
in	O
sizes	O
of	O
4K	O
,	O
8K	O
,	O
or	O
16K	O
words	O
.	O
</s>
<s>
The	O
DATANET-30	B-Device
could	O
also	O
operate	O
in	O
synchronous	O
mode	O
at	O
speeds	O
up	O
to	O
2400	O
bps	O
.	O
</s>
<s>
A	O
Computer	O
Interface	O
Unit	O
allowed	O
the	O
DATANET-30	B-Device
to	O
communicate	O
with	O
a	O
GE-200	B-Device
series	I-Device
computer	O
using	O
direct	B-General_Concept
memory	I-General_Concept
access	I-General_Concept
(	O
DMA	O
)	O
.	O
</s>
<s>
It	O
could	O
also	O
attach	O
to	O
the	O
I/O	B-Device
channel	I-Device
of	O
a	O
GE-400	B-Device
series	I-Device
,	O
or	O
GE-600	B-Device
series	I-Device
system	O
.	O
</s>
<s>
An	O
optional	O
attachment	O
allowed	O
the	O
DATANET-30	B-Device
to	O
attach	O
GE-200	B-Device
series	I-Device
peripherals	O
such	O
as	O
disk	B-Architecture
storage	I-Architecture
,	O
magnetic	O
tape	O
,	O
or	O
a	O
line	O
printer	O
.	O
</s>
<s>
The	O
system	O
was	O
also	O
a	O
general	O
purpose	O
computer	O
,	O
with	O
a	O
number	O
of	O
special-purpose	O
hardware	B-General_Concept
registers	I-General_Concept
.	O
</s>
<s>
Assemblers	O
were	O
provided	O
for	O
the	O
DATANET-30	B-Device
,	O
one	O
of	O
which	O
could	O
run	O
on	O
the	O
DATANET	O
itself	O
and	O
one	O
on	O
the	O
GE-225	B-Device
.	O
</s>
