<s>
The	O
UNITYPER	B-Device
was	O
an	O
input	B-Device
device	I-Device
for	O
the	B-Operating_System
UNIVAC	I-Operating_System
I	O
computer	O
manufactured	O
by	O
Remington	O
Rand	O
,	O
which	O
went	O
on	O
sale	O
in	O
mid-1951	O
but	O
was	O
not	O
in	O
operation	O
until	O
June	O
1952	O
.	O
</s>
<s>
The	O
UNITYPER	B-Device
accepted	O
user	O
inputs	O
on	O
a	O
keyboard	O
of	O
a	O
modified	O
Remington	O
typewriter	O
,	O
then	O
wrote	O
that	O
data	O
onto	O
a	O
metal	O
magnetic	O
tape	O
using	O
an	O
integral	O
tape	O
drive	O
.	O
</s>
<s>
The	O
UNITYPER	B-Device
II	O
was	O
an	O
input	B-Device
device	I-Device
for	O
the	B-Operating_System
UNIVAC	I-Operating_System
II	O
.	O
</s>
<s>
The	O
UNITYPER	B-Device
II	O
was	O
a	O
reduced-size	O
,	O
reduced-cost	O
version	O
of	O
the	O
UNITYPER	B-Device
I	O
subsequently	O
developed	O
as	O
a	O
text-to-tape	O
transcribing	O
device	O
for	O
the	B-Operating_System
UNIVAC	I-Operating_System
I	O
system	O
and	O
released	O
in	O
1953	O
,	O
also	O
sold	O
as	O
a	O
peripheral	O
to	O
the	B-Operating_System
UNIVAC	I-Operating_System
II	O
.	O
</s>
<s>
UNITYPER	B-Device
II	O
replaced	O
these	O
with	O
a	O
flexible	O
cable	O
and	O
clutch	O
system	O
driven	O
by	O
a	O
single	O
within	O
the	O
typewriter	O
.	O
</s>
<s>
Because	O
the	O
supply	O
and	O
take-up	O
spools	O
of	O
the	O
recording	O
tape	O
were	O
no	O
longer	O
individually	O
powered	O
as	O
in	O
the	O
UNITYPER	B-Device
1	O
,	O
a	O
"	O
differential	O
moment	O
"	O
was	O
created	O
as	O
the	O
tape	O
moved	O
from	O
one	O
reel	O
to	O
the	O
other	O
during	O
encoding	O
,	O
the	O
supply	O
reel	O
constantly	O
decreasing	O
in	O
effective	O
diameter	O
while	O
the	O
take-up	O
reel	O
correspondingly	O
increased	O
.	O
</s>
