<s>
IBM	B-Device
3740	I-Device
Data	O
Entry	O
System	O
was	O
a	O
data	O
entry	O
system	O
that	O
was	O
announced	O
by	O
IBM	O
in	O
1973	O
.	O
</s>
<s>
The	O
IBM	B-Device
3740	I-Device
system	O
was	O
intended	O
to	O
replace	O
the	O
traditional	O
unit	O
record	O
equipment	O
,	O
using	O
the	O
IBM	B-Architecture
card	I-Architecture
.	O
</s>
<s>
The	O
IBM	B-Device
3740	I-Device
system	O
consisted	O
of	O
the	O
following	O
equipment	O
:	O
</s>
<s>
IBM	O
3540	O
Diskette	O
Input/Output	O
Unit	O
(	O
held	O
up	O
to	O
20	O
diskettes	O
,	O
for	O
input	O
to/output	O
from	O
mainframe	O
computers	O
such	O
as	O
IBM	B-Application
System/360	I-Application
or	O
System/370	B-Device
and	O
mid-range	O
computers	O
such	O
as	O
IBM	B-Device
System/3	I-Device
,	O
IBM	B-Device
System/36	I-Device
and	O
IBM	B-Device
System/38	I-Device
.	O
)	O
</s>
<s>
If	O
a	O
large	O
office	O
complex	O
is	O
available	O
and	O
the	O
data	O
handling	O
capability	O
is	O
needed	O
,	O
then	O
a	O
large	O
number	O
of	O
dual	O
data	O
stations	O
could	O
be	O
used	O
along	O
with	O
possibly	O
another	O
data	O
converter	O
and	O
a	O
line	O
printer	O
attached	O
to	O
an	O
IBM	B-Device
3741	I-Device
Data	O
Station	O
which	O
is	O
used	O
by	O
the	O
lead	O
person	O
in	O
charge	O
of	O
the	O
operators	O
of	O
the	O
dual	O
work	O
stations	O
.	O
</s>
<s>
The	O
IBM	B-Device
3740	I-Device
System	O
was	O
designed	O
to	O
make	O
the	O
station	O
independent	O
of	O
the	O
system	O
for	O
which	O
the	O
data	O
was	O
being	O
collected	O
.	O
</s>
<s>
In	O
addition	O
local	O
print	O
capability	O
at	O
40	O
cps	O
for	O
some	O
of	O
the	O
models	O
of	O
the	O
IBM	B-Device
3741	I-Device
as	O
well	O
as	O
options	O
to	O
go	O
up	O
to	O
80	O
cps	O
or	O
even	O
120	O
cps	O
on	O
these	O
units	O
makes	O
the	O
system	O
even	O
more	O
usable	O
.	O
</s>
<s>
The	O
IBM	B-Device
3741	I-Device
Data	O
Station	O
is	O
a	O
work	O
station	O
which	O
is	O
similar	O
in	O
size	O
to	O
a	O
small	O
office	O
desk	O
-	O
large	O
enough	O
to	O
afford	O
some	O
personal	O
space	O
for	O
the	O
operator	O
,	O
yet	O
small	O
enough	O
to	O
allow	O
many	O
stations	O
in	O
smaller	O
office	O
spaces	O
.	O
</s>
<s>
There	O
are	O
four	O
models	O
of	O
the	O
IBM	B-Device
3741	I-Device
.	O
</s>
<s>
The	O
IBM	O
3742	O
is	O
a	O
slightly	O
larger	O
desk	O
compared	O
to	O
the	O
IBM	B-Device
3741	I-Device
.	O
</s>
<s>
The	O
functionality	O
and	O
options	O
available	O
for	O
this	O
work	O
station	O
are	O
somewhat	O
limited	O
compared	O
to	O
the	O
IBM	B-Device
3741	I-Device
.	O
</s>
<s>
The	O
IBM	O
3747	O
is	O
a	O
central	O
receiver	O
of	O
the	O
various	O
types	O
of	O
media	O
that	O
the	O
IBM	B-Device
3740	I-Device
system	O
utilizes	O
-	O
it	O
receives	O
the	O
data	O
over	O
the	O
data	O
cable	O
or	O
from	O
an	O
auto-feeding	O
hopper	O
of	O
8	O
"	O
diskettes	O
and	O
writes	O
the	O
data	O
to	O
the	O
tape	O
deck	O
according	O
to	O
the	O
type	O
of	O
tape	O
drive	O
needed	O
by	O
the	O
user	O
's	O
system	O
,	O
both	O
7	O
-	O
and	O
9-track	O
at	O
various	O
speeds	O
.	O
</s>
<s>
The	O
design	O
of	O
the	O
printer	O
case	O
of	O
the	O
IBM	O
3715	O
is	O
an	O
integral	O
standalone	O
,	O
so	O
that	O
the	O
printer	O
and	O
its	O
paper	O
input	O
and	O
output	O
handling	O
could	O
be	O
attached	O
to	O
the	O
IBM	B-Device
3741	I-Device
model	O
in	O
use	O
and	O
is	O
commensurate	O
in	O
height	O
so	O
that	O
it	O
could	O
be	O
positioned	O
conveniently	O
for	O
the	O
operator	O
's	O
use	O
.	O
</s>
<s>
The	O
IBM	O
3540	O
Diskette	O
Input/output	O
Unit	O
was	O
not	O
specifically	O
part	O
of	O
the	O
IBM	B-Device
3740	I-Device
system	O
but	O
provides	O
high-speed	O
input	O
and	O
output	O
over	O
a	O
Token	B-Device
Ring	I-Device
LAN	O
connection	O
and	O
through	O
diskettes	O
,	O
not	O
to	O
tape	O
as	O
in	O
the	O
IBM	O
3747	O
.	O
</s>
