<s>
The	O
IBM	B-Device
3505	I-Device
is	O
a	O
reader	O
for	O
80-column	O
punched	B-Architecture
cards	I-Architecture
.	O
</s>
<s>
It	O
can	O
read	O
cards	O
punched	O
in	O
EBCDIC	B-Language
or	O
column	O
binary	O
at	O
up	O
to	O
1200	O
cards	O
per	O
minute	O
(	O
CPM	O
)	O
.	O
</s>
<s>
The	O
IBM	B-Device
3525	I-Device
is	O
a	O
multi-function	O
punched	B-Architecture
card	I-Architecture
device	O
,	O
capable	O
of	O
reading	O
,	O
punching	O
,	O
and	O
printing	O
on	O
punched	B-Architecture
cards	I-Architecture
.	O
</s>
<s>
The	O
3505	O
contains	O
an	O
integrated	O
control	O
unit	O
that	O
attaches	O
to	O
a	O
System/370	B-Device
byte	O
multiplexer	O
,	O
selector	O
,	O
or	O
block	O
multiplexer	O
channel	B-Device
.	O
</s>
<s>
The	O
3505/3525	O
units	O
attach	O
to	O
a	O
System/370	B-Device
Model	I-Device
135	I-Device
and	O
up	O
,	O
or	O
to	O
a	O
System/360	B-Device
Model	I-Device
195	I-Device
.	O
</s>
<s>
The	O
3505	O
is	O
a	O
card	B-Device
reader	I-Device
and	O
controller	O
for	O
optional	O
3525	O
.	O
</s>
<s>
An	O
optional	O
feature	O
of	O
the	O
3505	O
was	O
available	O
to	O
allow	O
the	O
3505	O
to	O
read	O
optically-marked	B-Application
cards	O
.	O
</s>
<s>
A	O
full	O
stacker	O
stops	O
the	O
punch	B-Device
,	O
awaiting	O
operator	O
intervention	O
.	O
</s>
<s>
The	O
3525	O
model	O
P1	O
punches	B-Device
at	O
100CPM	O
,	O
the	O
P2	O
at	O
200CPM	O
,	O
and	O
the	O
P3	O
at	O
300CPM	O
.	O
</s>
