Exchanging Values
In addition to storing, recalling, and performing memory arithmetic, you can exchange the displayed value with a stored value.
Exchanging
The [ EXC ] key followed by the address of a data register exchanges the displayed value with the value stored in the specified register.Exchanging values can eliminate the need to perform separate store and recall operations.
Example
Evaluate x² + 4xy + 2y² where x = .25 and y = 1.2. (This example uses alphabetic addressing).Procedure | Press | Display |
|---|---|---|
| Clear display | [ CLEAR ] |  |
| Store x | .25 [ STO ] A |  |
| Evaluate x² | [ x² ] [ + ] |  |
| Enter y | 1.2 [ × ] |  |
| Store y, recall x | [ EXC ] A |  |
| Evaluate x² + 4xy | [ × ] 4 [ + ] |  |
| Recall y | 2 [ × ] [ RCL ] A |  |
| Evaluate y² | [ x² ] |  |
| Display result | [ = ] |  |
☚ Back