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Use
of
MULT
PCH
Key
Any
of
the
64
characters
on
the
keyboard
can
be
written
with
a
single
keystroke, using
either
numeric
or
alpha
shift.
When
a
combination of punches not
represented
on
the
keytop
identifications
is
desired,
hold
MULT
PCH
pressed while
keying
the necessary
punches
(12 through
9)
to
compose
the
special character. Pressing
MULT
PCH
places the
keyboard
in
numeric
shift,
and
suspends
column
advance
until
MULT
PCH
is
released.
Depression of
the
—
LZ
key
when
MULT
PCH
is
held causes
an
1
1
-punch.
Note
that
if
the special character
composed by
use of the
MULT
PCH
procedure
is
not
in
the 64-character
set,
that
printing
is
suppressed
when
that character
is
punched.
VERIFYING
The
basic
verify
procedure
is
given
in
Section 3
;
see
"Verify."
That procedure
is
amplified
in this
section
with
the
following operations:
Manual
Verifying
Duplicating
or
Skipping
Left
Zero
-LZ
Left
Blank
Left-zero
Control
Blank
Columns
Verifying
Two-try
Error Correction
VER CORR
for
Field Error Correction
Data Change
during
Verification
MULT
PCH
REL
Backspace and
Rekey
Manual
Verifying
Manual
verifying
is
the process
of rekeying
from
source
documents, and comparing
the data
punched
into
the card
during
keypunching with
that
keyed
by
the verify operator.
This ensures accuracy
and
validity
of
data
for
all
following
operations that use the
punched
card.
The punched
cards
are
read
into
input
storage
by
the
IBM
129,
one
at
a time,
in
the
same
sequence
as
keyed,
so the
original
source
documents
may
be
used.
The
IBM
129
stores the
"image" of
the card, then,
as
the operator
keys
each column,
compares
the
keystroke
with
the
column
of
the
card.
Automatic
functions
of
skipping
or duplicating
may
be
done under program
control.
If
the
keyed
character
and
the
card
column
compare,
the
operation continues.
If
there
are
no
errors
corrected
in
the
card,
a
2-punch and 3-punch
are
entered
in
column
8
1
at
the
completion of
verify,-
to
signify
that
no
errors
were
found
in
that
card
during
verify.
Error
routines
and
correction
procedures
are
explained
in
this
section.
The
keyboard
is
controlled for
manual
or alpha
shift
either
by program
control, or
use
of
the
manual
shift
key
and, normally,
shifting
is
the
same
as
in
punch mode. The
basic
functions
of
field
definition, duplicating, skipping,
and
alpha
program
shift
use the
same program
codes
for the
verify
mode
as for
the
punch mode.
In the high-
and
low-order
columns
of
a
field
(in
addition
to
field
definition),
LZ
programming
is
necessary
in verify
mode.
In
contrast,
only
field
definition
is
necessary
for
LZ
punching
(punch mode).
Note:
The
keyboard
locks
momentarily between
cards,
but
is
automatically
unlocked
as
soon
as
the
first
manual-verify
column of
the next card
is
read.
Duplicating or
Skipping
In
a
punching
operation, duplicating
or
skipping
punches
the
same
data
as
the previous
card, or
punches
spaces
in
the
card, respectively.
In
verifying,
manual
or auto-verify duplicating
compares
the
columns
or
fields
of
the present record
in
input
storage
with
the
data
from
the previously
verified card,
which
is
in
output
storage.
If
the
data
compares,
the
operation
continues;
if
it
does not compare, an
error
is
signaled
by
the
VERIFY
light.
In a
manual
verify-skip
operation, the
machine
verifies
that the
column
in
which
the skip
key
is
pressed
is
blank,
and then
ignores the
data
for
the balance
of
the
field, if
under program
control.
In
an
auto-verify skip operation,
the
machine
ignores that
field
of data completely,
and does
not
verify
or
check
it
at
all.
Note
that
although
a
field
may
be
auto-skipped during
verify,
if
there
is
an
error
elsewhere
in
that
record
that requires a correction card, the original
data of the auto-verify-skipped
field
is
punched
into
the
correction card,
even though
it
was
skipped during the
verify
process
itself.
Manual
or auto-verify duplicating
is
not
active in
the
first
record
after a clear
operation, or
until
a record has
been
keyed
or read into
output
storage.
This
is
similar
to the
duplicating
operation during punching.
Left
Zero
Code
the
program
with
a
3-punch
in
the high-order
and
low-order positions
of
the
field.
The
field also
gets
normal
field
definition
(12-punches).
The
verify-keying
procedure
is
the
same
as
the
punch-keying procedure
for
this field;
key
all
significant
digits,
then
press the
LZ
bar. If
the
source data
indicates
all
zeros,
key one
significant
zero,
then
press
the
LZ
bar.
In
LZ
punching,
zeros
were added
to the
field
after
the
digits
were punched,
by
using the
LZ
bar.
In
LZ
verifying,
the
first
digit
keystroke does
two
things:
it
causes the zeros
to
be
automatically
verified,
and
it
verifies
the
first
significant digit
of
the
field.
The
automatic
verification
of
zeros
is
at
electronic
speed
in
input
storage,
and
there
is
no
delay.
If
there
is
an
error
in
the
significant
digits,
check
both
the
digit
itself
and
the
column;
if
there
is
one
extra (or
one
less)
zero than there should be,
both
a digit
error
and
column-position
error
may
exist.
Supplementary
Operations
27
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