HP F2216A hp 33s_user's manual_English_E_HDPM20PIE56.pdf - Page 205

The Indirect Address, (i) Many functions that use A through Z (as variables or labels) can use ” to refer to A through Z (variables or labels) or statistics registers indirectly. The function ” uses the value in variable i to determine which variable, label, or register to address. The following table shows how. If i contains: Then (i) will address: ± 1 . . . ±26 ±27 ±28 ±29 ±30 ±31 ±32 ±33 ≥34 or ≤-34 or 0 variable A or label A . . . variable Z or label Z variable i n register Σx register Σy register Σx2 register Σy2 register Σxy register error: # 1L2 Only the absolute value of the integer portion of the number in i is used for addressing. The INPUT(i) and VIEW(i) operations label the display with the name of the indirectly-addressed variable or register. The SUMS menu enables you to recall values from the statistics registers. However, you must use indirect addressing to do other operations, such as STO, VIEW, and INPUT. The functions listed below can use (i) as an address. For GTO, XEQ, and FN=, (i) refers to a label; for all other functions (i) refers to a variable or register. Programming Techniques 13-21