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Correcting Errors
Correcting Entry Errors
- (Clear Entry/Clear)—To clear a numerical
entry, press - once; then enter the correct
number. To clear all pending operations and
begin the calculation again, press - twice.
w (x Exchange y)—Exchanges the values
of x and y. If you enter x and y in the incorrect
order, press w to reverse them. Then
complete the calculation.
v (Backspace)—Removes the last digit or
decimal point from the displayed number if you
have not yet pressed an operation key (p, o,
n, m, etc.). This key is useful for correcting
entry errors without having to clear the display
and start again.
Correcting Immediate Functions
You can often correct an immediate function by
performing the "reverse" operation. For
example, if you press 0 ] by mistake, you
can correct the operation by pressing 0 k.
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