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Section 5: Additional Operating Features
Section 5:
Additional Operating Features
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74
Section 5:
Section 5:
Additional Operating Features
Additional Operating Features
Errors. If you attempt an improper operation — such as division by zero — the
Errors.
Errors.
Errors.
calculator will display the word Error
the Error
Error display, press any key. This does not execute that key's function, but does
Error
Error
restore the calculator to its condition before the improper operation was attempted.
Refer to Appendix C for a list of error conditions.
Pr Error. If power to the calculator is interrupted, the calculator will display Pr Error
Pr Error.
Pr Error.
Pr Error.
when next turned on. This indicates that Continuous Memory — which contains all
data, program, and status information — has been reset.
The
The
The
The
key
key
key
key
Suppose you need to subtract $25.83 from $144.25, and you (mistakenly) key in
25.83, press \, then key in 144.25. But then you realize that when written
down on paper, the desired calculation reads 144.25 – 25.83, so that you have
unfortunately keyed in the
exchange the first and second numbers by pressing ~, the
Keystrokes
Keystrokes
Keystrokes
Keystrokes
25.83\144.25
~
-
The ~ key is also useful for checking the first number entered to make sure you
keyed it in correctly. Before pressing the operation key, however, you should press
~ again to return the second number entered to the display. Regardless of how
many times you press ~, the calculator considers the number in the display to
second
be the
number entered.
The
The
The
The
Key
Key
Key
Key
Occasionally you may want to recall to the display the number that was there
before an operation was performed. (This is useful for doing arithmetic calculations
with constants and for recovering from errors in keying in numbers.) To do so,
press gF (
last x
).
Error
Error followed by a digit (0 0 0 0 through 9 9 9 9 ). To clear
Error
second
number first. To correct this mistake, merely
Display
Display
Display
Display
144.25
Oops! You mistakenly keyed in the
second number first.
25.83
Exchanges the first and second
numbers. The first number keyed in is
now in the display.
118.42
The answer is obtained by pressing
the operation key.
Pr Error
Pr Error
Pr Error
exchange
key.
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