Radio Shack EC-291 PDAs & Smartphones User Manual


 
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For example:
Press
C/CE once to clear the last entry.
Press
C/CE twice to clear all pending
calculations.
Note: If the result of a calculation has
more than 10 digits, or if you try to di-
vide by 0,
E (error) appears. To clear
the error, press
C/CE.
Square Calculations
To do square calculations, press the
number and ×, then =.
You press You see
3 + 4 = 7.
8 × 3 – 4 = 20.
6 ÷ 3 + 2 = 4
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