HP 35s HP 35s scientific calculator - User Guide - Page 70
Arithmetic with Stored Variables, Storage Arithmetic
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To leave the VAR catalog at any time, press either or . An alternate method to clearing a variable is simply to store the value zero in it. Finally, you can clear all direct variables by pressing If all direct variables have the value zero, then attempting to enter the VAR catalog will display the error message If the value of a variable has too many digits to display completely, you can use Õ and Ö to view the missing digits. Arithmetic with Stored Variables Storage arithmetic and recall arithmetic allow you to do calculations with a number stored in a variable without recalling the variable into the stack. A calculation uses one number from the X-register and one number from the specified variable. Storage Arithmetic Storage arithmetic uses or to do arithmetic in the variable itself and to store the result there. It uses the value in the X-register and does not affect the stack. New value of variable = Previous value of variable x. For example, suppose you want to reduce the value in A(15) by the number in the X-register (3, displayed). Press A. Now A = 12, while 3 is still in the display. 3-6 Storing Data into Variables