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Section 4: Programming 1 58
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It is easier however, to switch back to RUN and to move the pointer to the top of memory (by
pressing RTN ) or to the label (by pressing GTO A ). Let us do the latter:
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Switch calculator off. then on.
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Switch to W/PRGM.
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Press
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See Displayed
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Comment
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A
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SST
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g
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SST
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1/x
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To delete the 1/x :
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Press
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See Displayed
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Comment
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g  DEL
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04 has been deleted.
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Notice that the pointer has backed up to the g (code 35). To insert the n! , just
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Press
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See Displayed
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Comment
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n!
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03 has been inserted.
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Testing the Revision. To verify that the A key is redefined calculate the factorial,
switch to RUN and
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Press
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See Displayed
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Comment
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5 A
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5!=120
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Figure 4-4 summarizes the editing process. You can tell memory is full by observing the display:
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Note that if memory is full, if you try to delete a step, you will also delete the bottom code;
be sure to reinsert it. One “–” sign indicates full memory.
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You can tell when the pointer is at the bottom:
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