<s>
The	O
RAND	B-Device
Tablet	I-Device
is	O
a	O
graphical	O
computer	O
input	O
device	O
developed	O
by	O
The	O
RAND	O
Corporation	O
.	O
</s>
<s>
The	O
RAND	B-Device
Tablet	I-Device
is	O
claimed	O
to	O
be	O
the	O
first	O
digital	O
graphic	O
device	O
marketed	O
as	O
being	O
a	O
low	O
cost	O
device	O
.	O
</s>
<s>
Development	O
of	O
the	O
RAND	B-Device
Tablet	I-Device
began	O
with	O
research	O
on	O
the	O
Sketchpad	B-Application
,	O
a	O
system	O
where	O
the	O
user	O
could	O
write	O
commands	O
for	O
a	O
computer	O
directly	O
on	O
the	O
tablet	O
,	O
conducted	O
by	O
Ivan	O
Sutherland	O
.	O
</s>
<s>
The	O
RAND	B-Device
Tablet	I-Device
was	O
one	O
of	O
the	O
first	O
devices	O
to	O
recognize	O
freehand	O
drawing	O
,	O
using	O
programs	O
like	O
Ellis	O
 '	O
.	O
</s>
<s>
The	O
RAND	B-Device
Tablet	I-Device
was	O
also	O
called	O
the	O
"	O
Grafacon	B-Device
"	O
and	O
is	O
considered	O
one	O
of	O
the	O
first	O
produced	O
graphics	B-Device
tablets	I-Device
.	O
</s>
<s>
The	O
original	O
RAND	B-Device
Tablet	I-Device
cost	O
$	O
18,000	O
and	O
was	O
available	O
to	O
research	O
facilities	O
in	O
1964	O
after	O
years	O
of	O
development	O
.	O
</s>
<s>
However	O
,	O
the	O
RAND	B-Device
Tablet	I-Device
did	O
not	O
catch	O
on	O
commercially	O
,	O
likely	O
due	O
to	O
an	O
inertia	O
in	O
user	O
habits	O
which	O
made	O
consumers	O
more	O
familiar	O
with	O
a	O
keyboard	O
device	O
,	O
and	O
the	O
lack	O
of	O
practical	O
applications	O
for	O
a	O
tablet	O
device	O
during	O
this	O
time	O
period	O
.	O
</s>
<s>
The	O
RAND	B-Device
Tablet	I-Device
is	O
a	O
large	O
10	O
"	O
x10	O
"	O
printed-circuit	O
screen	O
with	O
printed-circuit	O
capacitive-coupled	O
encoders	O
and	O
40	O
external	O
connections	O
.	O
</s>
<s>
The	O
stylus	O
used	O
on	O
the	O
RAND	B-Device
Tablet	I-Device
had	O
a	O
tiny	O
click	O
switch	O
that	O
,	O
when	O
depressed	O
,	O
would	O
send	O
a	O
signal	O
to	O
the	O
machine	O
.	O
</s>
<s>
A	O
program	O
was	O
written	O
in	O
IBM	B-Application
360	I-Application
Assembler	O
Language	O
to	O
allow	O
an	O
online	O
computer	O
user	O
to	O
write	O
data	O
and	O
directives	O
on	O
the	O
RAND	B-Device
Tablet	I-Device
.	O
</s>
<s>
Chinese	O
Character	O
Lookup	O
was	O
a	O
companion	O
project	O
which	O
used	O
the	O
RAND	B-Device
Tablet	I-Device
to	O
provide	O
a	O
translation	O
aid	O
.	O
</s>
<s>
Markings	O
,	O
words	O
,	O
and	O
symbols	O
could	O
by	O
easily	O
be	O
added	O
to	O
maps	O
using	O
the	O
RAND	B-Device
Tablet	I-Device
.	O
</s>
<s>
The	O
heart	O
of	O
the	O
Video	O
Graphic	O
system	O
was	O
an	O
IBM	B-Device
1800	I-Device
computer	O
and	O
a	O
36	O
"	O
diameter	O
magnetic	O
disk	O
to	O
store	O
scanned	O
images	O
and	O
keep	O
the	O
parts	O
of	O
a	O
displayed	O
composite	O
image	O
in	O
sync	O
.	O
</s>
