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HP HP-67 User Manual

HP HP-67
364 pages
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Interrupting
Your
Program
175
Pausing
for
Input
When
the
calculator
executes
a
instruction,
program
control
actually
returns
to
the
keyboard
for
the
period
of
time
(about
one
second)
of
the
pause.
You
can
use
a
to
key
data
into
or
perform
functions
from
the
keyboard,
instead
of
using
the
instruction
to
stop
the
running
program
completely.
(Control
does
not
return
to
the
keyboard
during an
pause,
however.)
When
you
press
any key
during
the
one-second
‘‘window’”
while
the
calculator
is
executing
a
instruction,
that
key
actually
operates,
and
you
have
an
additional
one
second
of time
to
view
the
result
or
to
press
another
key.
If
you
press
yet
another
key
during
the
subsequent
one
second,
the
calculator
will
perform
that
operation
and
pause
for
another
second.
If
you
press
a
function
key
during
a
pause,
the
function
key
operates
upon
the
number
contained
in
the
X-register
at
the
time.
The
result
of
the
function
is
then seen
in
the
display
for
about
one
second.
Any
function
key
that
is
programmable
can
also
be
operated
from
the
keyboard
during
a
[(PAUSE
.
If
you
press a
digit
key,
or a
series
of
digit
keys,
during
a
pause,
the
number
appears
in
the
display
for the
length
of
a
pause
(about
one
second)
after
you
key
in
the
number.
(If
a
number
has
been
input
from
the
program
immediately
before
the
pause,
that
number
is
first
terminated
by
the
instruction.)
The
number
that
you
key
in
is
terminated
at
the
end
of
the
pause.
Any
subsequent
digits in
a
program
will
then
be
part
of
a
new
number.
When
a
instruction
has
completed
execution,
the
program
continues
to
be
executed
sequentially.
If
you
have
performed
a
function,
or
keyed
in
a
number,
program
execution
begins
with
the
next
instruction
using
the
number
that
is
in
the
displayed
X-register
at
the
end
of
the
pause.
(You
can
also
read
a
magnetic
card
during
a(PAUSE
).
More
about
this
in
section
14,
Card
Reader
Operations.)
Number
termination
occurs
at
the
end
of
each
(PAUSE
],
so
you
should
not
attempt
to
key
in
a
number
during
more
than
one
subsequent
pause.
Since
you
have
about
one
second
after
your
last
keystroke
to
continue
keying
in
digits
or
functions,
you
don’t
need
more
than
one
instruction
to
key
in
even
a
very
long
number.

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HP HP-67 Specifications

General IconGeneral
BrandHP
ModelHP-67
CategoryCalculator
LanguageEnglish

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