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Programmed Calculations - Canon F-73P Instructions Manual

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IV. Programmed Calculations
A sequential key operation can be entered in
the program memory as a program and then ex-
ecuted to perform the entered operation auto-
matically.
Five program instructions, "ENT",
"HLT",
"x >0",
"x~M"
,
and
"GOTO",
control
the program
procedures.
Program 1, Program 2: Two programs can be
stored in the program memory at the same
time. These are entered (program entry) in
the LRN1 and LRN2 modes. The program en-
tered in the LRN1 mode is called program 1.
The program entered in the LRN2 mode is
called program
2.
These programs are executed in the DEC
mode. Use the
~
key for program 1 execu-
tion and the ~ and
~
keys for program
2.
Step: Each key operation in a program is called
a
step.
Each keystroke is considered one
step except when more than one keystroke is
56
.
t'
(
Ill¥
~
required to reg1ster an opera 10n
CJ
@l,
~
li!ru ,
etc).
Iilli@
and
~ill)@
are both considered 2 pro-
gram steps. Up to 45 program steps can be
stored and executed. If two programs are
stored, the total number of steps for both pro-
grams cannot exceed 45 steps.
HL T, ENT
Instructions:
• HALT instruction --- Halts the program
execution.
When this program instruction is executed
during the program flow, execution stops. Ex-
ecution is restarted by depressing the
~
key (program 1 ) or the
~
and
~
keys
(program 2). This instruction is also used to
display a value during calculation
.
When this
program instruction is entered in the LRN1 or
LRN2 mode or is used to stop program exe-
cution in the DEC mode, "HL T" is displayed.
(Ex.)
Program
3
+
4
HL T
---
Program execution stops at this
x
step, and
7
is
displayed.
Depressing
~
(program
1)
or~ ~
2
(program
2)
restarts the
program and the remaining steps
are executed.
• ENT Instruction --- Used for entering
values during program execution. When
this
program
instruction
is executed
during the program flow, program execu-
tion stops and numbers can be
entered.
Use the same procedure to restart pro-
gram execution as that used for the HALT
instruction.
57

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