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HP HP-11C User Manual

HP HP-11C
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Section
5:
Programming
Basics
81
When
the
calculator
is
in
program
mode,
the
number
that
you
see
on
the
left
side
of
the
display
indicates
the
line
number
in
program
memory
to
which
the
calculator
is
set.
Press
CLEAR
[PRGM],
then
[A]—the
first
keystroke
of
the
heat
loss
program
(page
12)—
and
the
display
will
change
to:
001-42,21,11
-
o
Line
Number
—‘
L——-
Keycode
The
calculator
is
now
set
to
line
001
of
program
memory,
as
indicated
by
the
001
that
you
see
on
the
left
side
of
the
display.
The
other
numbers
in
the
display
are
keycodes
for
the
keystrokes
that
have
been
loaded
into
that
line
of
program
memory.
Press
3.
Your
display
shows:
002-
3
N
S
Line
Number
——4
L
Keycode
The
002
on
the
left
side
of
the
display
indicates
that
you
are
now
at
line
two
of
the
program.
Each
line
of
program
memory
‘“‘remembers”
a
single
program
instruction,
whether
that
instruction
consists
of
one,
two,
or
three
keystrokes.
Thus,
one
line
of
program
memory
might
contain
a
single-keystroke
instruction
like
[CHS],
while
another
line
of
program
memory
could
contain
the
three-keystroke
instruction
6
(adds
the
number
in
the
displayed
X-register
to
the
number
in
Rg).
The
keystrokes
in
program
instructions
are
represented
in
the
calculator
by
keycodes.
Interpreting
Keycodes
Most
keycodes
for
HP-11C
key
positions
are
determined
by
a
simple
row/column
matrix.
The
key
rows
are
numbered
1
through
4.
The
key
columns
are
numbered
1
through
10.
(The
tenth
column
is
represented
in
HP-11C
keycodes
as
a
0,
for
example,
“20”
represents
row
2,
column
10,
and
corresponds
to
the
key.
The
only
key
positions
which
do
not
conform
to
the
matrix
code
are
functions
assigned
to
the
0
through
9
digit
keys.
The
codes
for
functions
on
these
keys
are
simply
the
single
digit
on
the
face
of
the
key.

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HP HP-11C Specifications

General IconGeneral
BrandHP
ModelHP-11C
CategoryCalculator
LanguageEnglish

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