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HP HP-67 User Manual

HP HP-67
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134
Simple
Programming
Ending
a
Program
To
define
the
end
of
a
program,
you
should
use
an
(3
(return)
instruction.
When
the
calculator
is
executing
a
program
and
encoun-
ters
a
instruction
in
program
memory,
it
stops
(unless
executed
as
part
of
a
subroutine—more
about
subroutines
later).
For example,
if
the
calculator
were
executing
a
program
that
had
begun
with
[&,
when
it
encountered
B3
RTN),
it
would
stop.
Another
instruction
that
will
cause
a
running
program
to
stop
is
(R/S).
When
a
running
program
executes
a
instruction
in
program
memory,
it
stops
just
as
it
does
when
it
executes
(RTN.
Good
programming
practice,
however,
dictates
that
you
normally
use
(3
rather
than
to
define
the
end
of
your
program.
The
Complete
Program
The
complete
program
to
solve
for
the
area
of
any
circle
given
its
radius
is
now:
o
3
Assigns
name
to
and
defines
beginning
of
program.
a
Squares
the
radius.
0
Summons
pi
into
the
display.
]
Multiplies
r2
by
7
and
displays
the
answer.
Q
Defines
the
end
of
and
stops
the
program.
Loading
a
Program
You
load
a
program
into
the
calculator
in
either
of
two
ways:
1.
By
passing
a
magnetic
card
containing
program
instructions
through
the
card
reader
with
the
W/PRGM-RUN
switch
wipRGM
[l
run
set
to
RUN.
2.
By
setting
the
W/PRGM-RUN
switch
wrram
[[[[IllRUN
to
W/PRGM
(program)
and
pressing
the
keys
from
the
keyboard
in
the
natural
order
you
would
press
them
to
solve
a
problem
manually.

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HP HP-67 Specifications

General IconGeneral
BrandHP
ModelHP-67
CategoryCalculator
LanguageEnglish

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