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eliminate such
trouble,
it
is
preferrab le
to have the
ca lcu lator
memorize
the
proce-
dure for the
ca lculation so
that
only the
number (variable
=
radius)
is
e
ntered
.
This
is the advantage of programmed calculation.
To
prepare a
program, it is
sufficient to arrange the operations according to
sequence of the manual
calculation
but please note
the fol lowing 2
points.
1. Seperate
var iables
from constants in formula
to
be
ca lcu lated.
The
radiu
s varies
according to the size
of
the
circle and is
therefore,
the
variable.
The number
whi
ch is
common (constant) to
the
c ircles of all sizes, such as t
he
number
7T,
is
a
constant. At the place where variables will be
entered,
give
"H"
(HALT) order.
Where
a
constant
is
to be
entered
(or used),
the
number itself
is
the program order.
2. At the
end of
program, give END order.
Step
Program
Note
1
H
Radius (r)
2
X
3
=
r2
4
X
5
7T
6
=
Area
of
a circle (rrr2)
7
END
END
order
2)
Programming of
entry
keys
(
0
~
~
,
~
,
[1J
8
Constant numbers:
The
number designated by
entry
key operation
is
stored
in
the
program memory
as
a
constant
number
.
Variable number: Before this number is entered
the
~
key is pressed to store the
halt instruction. I n this
case
,
the
HALT
order
is stored, but
entry
numbers are not
stored.
Example
Operation
~
~
~
~
~
00
~
~
~
~
0
~ ~
Step
2
3
4
5
6
7
8
Instruction
2
3
X
H
F
END
j
3) Programming in the last step
After programming in the 64th step, the execution mode of the program is auto-
matically designated without the
~
~
key operation. Consequently, the key
operation for next step is not
stored
in the program memory.
4) Execution of program
The execution of the program is started by
~
key operation and automaticaily
stops at
all
HALT instructions, END instruction, or by the
execution
of the last step.
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