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Pressing the gu keys is not necessary when we do the calculations manually,
since in Run mode the result of every intermediate calculation is displayed
automatically; but we'll include u instructions in the program so that the
intermediate results AMOUNT and TAX are automatically displayed when the
program is executed.
Keystrokes
Keystrokes
Keystrokes
Keystrokes
6.75?0
fCLEAR²
13
\
68.5
?+1
:0
b
?+2
+
?+3
Now, we'll store the program in program memory. Do not key in the quantity and
cost of each item; these numbers will vary each time the program is run.
Keystrokes
Keystrokes
Keystrokes
Keystrokes
fs
fCLEARÎ
gu
?+1
:0
b
Section 8: Programming Basics
Section 8:
Section 8:
Section 8:
Display
Display
Display
Display
6.75
Stores tax rate in R
0.00
Clears the registers in R
through R
13.
Keys in quantity of item.
13.00
Separates quantity of item from
cost of item to be keyed in next.
68.5
Keys in cost of item.
890.50
AMOUNT.
890.50
Adds AMOUNT to sum of
AMOUNT entries in register R
6.75
Recalls tax rate to display.
60.11
TAX.
60.11
Adds TAX to sum of TAX entries
in register R
950.61
TOTAL.
950.61
Adds TOTAL to sum of TOTAL
entries in register R
Display
Display
Display
Display
00-
Sets calculator to Program
mode.
00-
Clears program memory.
01-
20
02-
43
31
Pauses to display AMOUNT.
03- 44 40
1
04-
45
0
05-
25
Programming Basics
Programming Basics
Programming Basics
.
0
1
.
6
.
2
.
3
99
99
99
99
.
1
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