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Section 3: Automatic Memory Stack and ALPHA Register41
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Try using APPEND now:
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ADD _
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0.2000
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ADD
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ADD _
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ADDITION
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0.2000
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If you don’t press APPEND before adding
new characters, the new characters will clear the previous string from
the ALPHA register. For example:
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Function Names and the Display
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Each time you press and hold a function key for a moment, a name describing
that function appears in the display. When you release the key, the name
goes away and the function is executed.
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If you press and hold a function key for longer than about a half second,
the name will appear, and then will be replaced by the word
NULL.
NULL indicates that the function
has been nullified and will not be executed when you release the key.
This allows you to preview function names and quickly recover from keystroke
errors.
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Keys that you use to key in numbers ( CHS ,
EEX ,
· and 0 through 9) and ALPHA
characters do not prompt with a name in the display. These keys execute when
the key is pressed—they cannot be nullified.
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Clearing the ALPHA- and X-registers
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You can clear the contents of the ALPHA register in ALPHA mode by pressing
g
CLA. CLA (clear ALPHA)
clears the ALPHA register and leaves the automatic memory stack intact.
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