108 Section 9: Branching and Looping
Keystrokes
(RPN mode)
Display
20000?0
20,000.00
Stores test value in register R
0
.
20?1
20.00
Stores 20% tax rate in register R
1
.
25?2
25.00
Stores 25% tax rate in register R
2
.
15000
15,000.
Keys income less than test value
into display and X-register.
Ê
001, 45 0
Line 001: :0.
20,000.00
Test value has been recalled to
X-register, moving income to
Y-register.
Ê
002, 34
Line 002: ~
15,000.00
Income has been placed in
X-register and test value has been
placed in Y-register.
Ê
003, 43 34
Line 003: go
15,000.00
Ê
004,43,33,007
Condition tested by o was
true, so program execution
continued with line 004:
gi007.
15,000.00
Ê
007, 45 1
Line 007: :1.
20.00
20% tax rate has been recalled to
X-register, moving income to Y-
register.
Ê
008, 25
Line 008: b.
3,000.00
20% of 15,000 = 3,000.
20000
20,000.
Keys income equal to test value
into display and X-register.
Ê
001, 45 0
Line 001: :0.
20,000.00
Test value has been recalled to X-
register, moving income to Y-
register.
Ê
002, 34
Line 002: ~.
20,000.00
Income has been placed in X-
register and test value has been
placed in Y-register.
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