HP 35s HP 35s scientific calculator - User Guide - Page 71

A 15 A 12 Result: 15 - 3 that is, A - x Tt Tt Zz Zz Yy Yy X 3 A X 3 Recall Arithmetic Recall arithmetic uses or  to do arithmetic in the X-register using a recalled number and to leave the result in the display. Only the X-register is affected. The value in the variable remains the same and the result replaces the value in the x-register. New x = Previous x Variable For example, suppose you want to divide the number in the X-register (3, displayed) by the value in A(12). Press   A. Now x = 0.25, while 12 is still in A. Recall arithmetic saves memory in programs: using   A (one instruction) uses half as much memory as  A,  (two instructions). A 12 A 12 Tt Zz Yy X3 A T t Zz Y y Result: 3 ÷ 12 X 0.25 that is, x ÷ 12 Storing Data into Variables 3-7