<s>
The	O
Data	B-Device
General/One	I-Device
(	O
DG-1	O
)	O
was	O
a	O
laptop	B-Device
introduced	O
in	O
1984	O
by	O
Data	O
General	O
.	O
</s>
<s>
The	O
nine-pound	O
battery-powered	O
1984	O
Data	B-Device
General/One	I-Device
ran	O
MS-DOS	B-Application
and	O
had	O
dual	O
3.5	B-Device
"	I-Device
diskettes	B-Device
,	O
a	O
79-key	O
full-stroke	O
keyboard	O
,	O
128	O
KB	O
to	O
512	O
KB	O
of	O
RAM	O
,	O
and	O
a	O
monochrome	O
LCD	B-Device
screen	I-Device
capable	O
of	O
either	O
the	O
standard	O
80×25	O
characters	O
or	O
full	O
CGA	B-Device
graphics	I-Device
(	O
640×200	O
)	O
.	O
</s>
<s>
It	O
was	O
a	O
laptop	B-Device
comparable	O
in	O
capabilities	O
to	O
desktops	O
of	O
the	O
era	O
.	O
</s>
<s>
The	O
Data	B-Device
General/One	I-Device
offered	O
several	O
features	O
in	O
comparison	O
with	O
contemporary	O
portable	O
computers	O
.	O
</s>
<s>
For	O
instance	O
,	O
the	O
popular	O
1983	O
Radio	O
Shack	O
TRS-80	B-Operating_System
Model	I-Operating_System
100	I-Operating_System
,	O
a	O
non-PC-compatible	O
machine	O
,	O
was	O
comparably	O
sized	O
.	O
</s>
<s>
It	O
was	O
a	O
small	O
battery-operated	O
computer	O
resting	O
in	O
one	O
's	O
lap	O
,	O
but	O
had	O
a	O
40×8	O
character	O
(	O
240×64	O
pixel	O
)	O
screen	O
,	O
a	O
rudimentary	O
ROM-based	O
menu	O
in	O
lieu	O
of	O
a	O
full	O
OS	O
,	O
and	O
no	O
built-in	O
floppy	B-Device
.	O
</s>
<s>
IBM	O
's	O
1984	O
Portable	B-Device
PC	I-Device
was	O
comparable	O
in	O
capability	O
with	O
desktops	O
,	O
but	O
was	O
not	O
battery	O
operable	O
and	O
,	O
being	O
much	O
larger	O
and	O
heavier	O
,	O
was	O
by	O
no	O
means	O
a	O
laptop	B-Device
.	O
</s>
<s>
One	O
problem	O
was	O
its	O
use	O
of	O
3.5	B-Device
"	I-Device
diskettes	B-Device
.	O
</s>
<s>
Popular	O
software	O
titles	O
were	O
thus	O
not	O
widely	O
available	O
(	O
5.25	B-Device
"	I-Device
being	O
still	O
the	O
standard	O
)	O
,	O
a	O
serious	O
issue	O
since	O
then-common	O
diskette	B-Device
copy-protection	O
schemes	O
made	O
it	O
difficult	O
for	O
users	O
to	O
copy	O
software	O
into	O
that	O
format	O
.	O
</s>
<s>
The	O
CPU	O
was	O
a	O
CMOS	B-Device
version	O
of	O
the	O
8086	O
,	O
compatible	O
with	O
the	O
IBM	O
PC	O
's	O
8088	O
except	O
it	O
ran	O
slightly	O
slower	O
,	O
at	O
4.0	O
MHz	O
instead	O
of	O
the	O
standard	O
4.77MHz	O
.	O
</s>
<s>
Unlike	O
the	O
Portable	B-Device
PC	I-Device
,	O
the	O
DG-1	O
laptop	B-Device
could	O
not	O
take	O
regular	O
PC/XT	O
expansion	O
cards	O
.	O
</s>
<s>
RS-232	O
serial	B-Protocol
ports	I-Protocol
were	O
built-in	O
,	O
but	O
the	O
CMOS	B-Device
(	O
low	O
battery	O
consumption	O
)	O
serial	O
I-O	O
chip	O
available	O
at	O
design	O
time	O
,	O
a	O
CMOS	B-Device
version	O
of	O
the	O
Intel	B-Device
8251	I-Device
,	O
was	O
register	O
incompatible	O
with	O
the	O
8250	B-Device
serial	O
IC	O
standard	O
for	O
the	O
IBM	O
PC	O
.	O
</s>
<s>
As	O
a	O
result	O
,	O
software	O
written	O
for	O
the	O
PC	O
serial	B-Protocol
ports	I-Protocol
would	O
not	O
run	O
correctly	O
.	O
</s>
<s>
This	O
required	O
the	O
use	O
of	O
software	O
written	O
using	O
the	O
relatively	O
slower	O
and	O
less	O
flexible	O
BIOS	B-Device
interrupt	I-Device
call	I-Device
(	O
014h	O
)	O
,	O
or	O
software	O
written	O
exclusively	O
for	O
the	O
DG-1	O
.	O
</s>
<s>
Although	O
Creative	B-General_Concept
Computing	I-General_Concept
termed	O
the	O
price	O
of	O
US$2895	O
"	O
competitive	O
,	O
"	O
it	O
was	O
a	O
very	O
expensive	O
system	O
,	O
and	O
usually-needed	O
additions	O
such	O
as	O
more	O
RAM	O
and	O
an	O
external	O
5	O
"	O
drive	O
drove	O
the	O
price	O
higher	O
yet	O
.	O
</s>
<s>
The	O
Data	B-Device
General/One	I-Device
also	O
had	O
a	O
built-in	O
dumb	O
terminal	O
emulator	O
,	O
suggesting	O
an	O
attempt	O
to	O
attract	O
as	O
customers	O
those	O
in	O
organisations	O
with	O
large	O
,	O
expensive	O
minicomputers	B-Architecture
or	O
mainframes	B-Architecture
that	O
would	O
access	O
corporate	O
data	O
via	O
terminals	O
such	O
as	O
the	O
ADM-3A	B-Device
or	O
Data	O
General	O
's	O
own	O
Dasher	O
terminals	O
(	O
the	O
cost	O
of	O
the	O
laptop	B-Device
would	O
not	O
have	O
seemed	O
excessive	O
in	O
such	O
situations	O
)	O
.	O
</s>
<s>
Although	O
unusually	O
large	O
,	O
the	O
LCD	B-Device
display	I-Device
had	O
very	O
low	O
contrast	O
and	O
narrow	O
viewing	O
angle	O
.	O
</s>
