IBM 129 Reference Manual page 8

Card data recorder
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Section
1.
General Description
The
IBM
129 Card Data Recorder
is
a
programmed,
data-storage,
key-entry,
card-punching
and
verifying
machine
used
to
punch
80-column
cards
for
data
pro-
cessing.
Similar
in
operation
and
appearance
to the
IBM
29
Card
Punch
and
IBM
59 Card
Verifier,
the
IBM
129
offers
the following
special
advantages:
Keyed
input data simultaneous
with automatic
func-
tions.
Keyed
input error correction before
punching.
• Card
read-in for verification
at
speeds of
80
columns/
second.
Immediate
error
correction during
verification,
including
repunching
to provide a correct
card.
Six
program
levels
plus a
"no-format" program.
An
improved
column
indicator located
on
the
keyboard
panel.
New
special
features for greater
function
and
flexi-
bility:
the
production
statistics
and
accumulate,
and
the
direct
punch
control
and
verify
read
control.
Left-zero or
left-blank insertion
is
standard
in
all
models.
A
48/64-character
keyboard
mode
switch.
An IBM
29-type interlocked keyboard.
The
IBM
129 Card Data Recorder
is
available in three
models:
Model
1
:
Punch-Verify
(nonprint)
Model
2:
Print-Punch (nonverify)
Model
3:
Print-Punch-Verify.
The Model
3 (print-punch-verify)
is
shown
as
the
large
illustration
on
the Frontispiece.
The
smaller
illustrations
show
Models
1
and
2.
Verify
models
use
a
combined
punch/read
station.
(With
verify
models,
any mention
to
a station
refers
to the
combination punch/read
station.)
The Model
1
has
no
punch/verify
switch;
when
using
this
model,
ignore
references to that switch.
A
general description
of
the operation (data flow)
of
the
card data recorder follows-in turn followed
by
a detailed
description
of
the
component
functions.
For
this
simplified
general description,
assume
the card
punch
is
the
Model
3
(punch-print-verify).
(The punching
operation
is
the
same
in
verify
models.)
Assum'e
further
that
the
function
controls
(to
be described
later) are set
to
the
punch
mode
and
use
program
level
0,
which
provides
80
single-position
fields,
alphabetic
in
keyboard
shift
(equivalent to
"star-
wheels
raised"
on
the
IBM
29).
DATA FLOW
Blank
cards,
placed
in
the card
hopper,
are
fed
(one
at
a
time)
into
the card bed,
which
transports
each
card to the
punch
station.
The
operator keys
in
each
character,
and
the
information
is
saved
in
input storage
until
the
80-column
(maximum)
record
is
completed.
When
keying
is
com-
pleted,
the data
in
storage
is
automatically
punched
into
the card
at
the
punch/read
station.
Storage
is
immediately
available for
keying
the
next
record,
while
the previous
record
is
being punched.
The
punching
process continues,
independent of
operator
keying.
At
the next
punching
all
cards
move
up; thus they
are
transported
through
the recorder
and
out
into the
card
stacker.
The punched
cards
can be
removed from
the card
stacker for further processing.
Keyed
data
is
stored
in electronic
form
before
it
is
punched
into a
card.
This allows an operator the
capability
to
easily
rekey data before
it
is
punched
into the card.
The
column
indicator,
provided with
the data recorder,
is
a
visual
display device that
shows
the
operator
the
next
column
to
be keyed.
Automatic
control of
such
functions
as
data formatting,
duplicating, inserting
left
zeros,
and
skipping
is
accom-
plished
by
a stored
program
with
six
program
levels
(plus
level
0).
Before
the
card
punching
operation
begins,
individual
program
cards
for
the
six
program
levels
are
punched and
may
be
read into
program
control
storage,
one
at
a time.
Any
of
these
programs
may
be
selected to control
the
keying format,
as
required.
See
Figure
1.
Keyed
corrections
may
be
made
via
input
storage before
the record
is
completed.
The
completed
record
is
stored
in
output
storage
ready
to
be punched, and
available for
duplication
of data
into
the next record fed into input
storage.
Among
the
capabilities
of
the
129 Card Data
Recorder
are
the following:
1.
Input data
may
be keyed
while the
machine
performs
automatic
functions: card feed,
register,
left
-zero
opera-
tions, skip,
and
punch
and/or
verifier
duplication.
This
provides
complete
overlap, so that
keying
may
continue
while the previous card
is
being
punched.
2.
Erroneous
keystrokes can be corrected
on
a character,
word,
field,
or record
basis
in
storage
before
automatic
punching
for that
card
begins.
(Thus,
an
error
need
never
be punched.)
3.
Nonsignificant
left
zeros
(or
blanks)
may
be entered
automatically,
for
a
maximum
79-character
field size.
4.
A
master card
may
be
read into storage
for
automatic
duplication
or
automatic
verification in
the following
General
Description
5

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