Basic Features
The Ikey is also used in Reverse Polish Notation (RPN) mode to enter a number on the stack or duplicate it.
The =Key
The =key is used at the end of a mathematical operation to calculate the final result. For example, 1+2=returns a final result of 3.
The =key also allows you to request a calculation for the value of an item. This request only applies to items that can be calculated.
For example, when you select the nominal interest rate (Nom. %= ) in the Interest Conversion (Iconv) menu, pressing =outside of a mathematical operation calculates and displays the nominal interest rate based on the stored data in the other variables in the menu.
To open the Iconv menu, press :&. Nom %= displays on the top line, and the current value assigned to the nominal interest rate is displayed on the bottom line. At this screen, press 12Ito enter a new current value for the nominal rate. Press <followed by =to calculate the current value for the effective rate. See Figure
Figure
15