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HP HP-67 User Manual

HP HP-67
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Simple
Programming
133
Creating
Your
Own
Program
In
Meet
the
HP-67,
at
the
beginning
of
this
handbook,
you
created,
loaded,
ran,
and
recorded
a
program
that
solved
for
the
surface
area
of
a
sphere,
given
the
diameter
of
that
sphere.
Now
let’s
create,
load,
and
run
another
program
to
show
you
how
to
use
some
of
the
other
features
of
the
HP-67.
If
you
wanted
to
use
the
HP-67
to
manually
calculate
the
area
of
a
circle
using
the
formula
4
=
7r?
you
could
first
key
in
the
radius
r,
then
square
it
by
pressing
B}
(7).
Next
you
would
summon
the
quantity
pi
into
the
display
by
pressing
@
().
Finally
you
would
multiply
the
squared
radius
and
the
quantity
pi
together
by
pressing
Remember
that
a
program
to
solve
a
problem
is
nothing
more
than
the
keystrokes
you
would
press
to
solve
the
problem
manually.
Thus,
in
order
to
create
a
program
for
the
HP-67
that
will
solve
for
the
area
of
any
circle,
you
use
the
same
keys
you
pressed
to
solve
the
problem
manually.
The
keys
that
you
used
to
solve
for
area
of
a
circle
according
to
the
formula
A
=
r2
are:
8
0@
8
You
will
load
these
keystrokes
into
program
memory.
In
addition,
your
program
will
contain
two
other
operations,
Â¥
and
[RTN).
The
Beginning
of
a
Program
To
define
the
beginning
of
a
program
you
should
use
an
(label)
instruction
followed
by
one
of
the
letter
keys
(£,
[,
(4,
&
or
@)
or@
followed
by
(2)
through
(5.
The
use
of
labels
permits
you
to
have
several
different
programs
or
parts
of
programs
loaded
into
the
calculator
at
any
time,
and
to
run
them
in
the
order
you
choose.
The
digit
keys
(0]
through(8)),
when
prefaced
by
£
(CELJ,
can
also
be
used
to
define
the
beginning
of
a
program.
However,
since
you
must
use
8
(n)
from
the
keyboard
if
you
want
to
select
and
execute
that
program,
(9)
through
(8]
are
usually
reserved
for
defin-
ing
routines—that
is,
parts
of
larger
programs.

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HP HP-67 Specifications

General IconGeneral
BrandHP
ModelHP-67
CategoryCalculator
LanguageEnglish

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