The t-Register
Although the t-register ( temporary register ) is used primarily in statistics and polar/rectangular conversions, you can use it for temporary storage of a numeric value. When using the t-register for temporary storage, you should be aware of some characteristics that make this register different from a data register.
Using the t-Register
The [ x~t ] key enables you to quickly exchange (swap) the displayed value with the value in the t-register. Because this operation requires only one keystroke to store or recall a value, you may occassionally find it more convenient than using a data register.Example
Using the t-register, calculate 2.773.55-2.77+3.55.Procedure | Press | Display |
|---|---|---|
| Clear display | [ CLEAR ] |  |
| Begin Calculation | 2.77 [ yx ] |  |
| Store 2.77 in t-register and continue problem | [ x~t ] [ ( ] 3.55 [ - ] |  |
| Store 3.55, restore 2.77 to display | [ x~t ] |  |
| Perform subtraction, then exponentiation | [ ) ] [ + ] |  |
| Restore 3.55 to display | [ x~t ] |  |
| Display result | [ = ] |  |
Limitations
The operation of the t-register is different from that of a data register. Remember the following limitations.- You lose any value stored in the the t-register if you turn off the calculator or perform any functions that use the t-register, such as statistics functions or polar/rectangular conversions.
- You cannot perform memory arithmetic, increment, or decrement operations using the t-register.
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