Texas-instruments BA II PLUS Manuel d'utilisateur télécharger pdf (Page 21)

Overview of Calculator Operations 17

Accessing Prompted-Worksheet Variables

After you access a worksheet, press # or " to select variables. For

example, press & \ to access the Amortization worksheet, and

then press # or " to select the amortization variables (

P1, P2, BAL, PRN,

INT

).(See “TVM and Amortization Worksheet Variables” on page 22.)

Indicators prompt you to select settings, enter values, or compute results.

For example, the i#

$ indicators remind you to press # or " to select

other variables. (See “Reading the Display” on page 2.)

To return to the standard-calculator mode, press & U.

Types of Worksheet Variables

• Enter-only

• Compute-only

• Automatic-compute

• Enter-or-compute

•Settings

Note: The = sign displayed between the variable label and value

indicates that the variable is assigned the value.

Enter-Only Variables

Values for enter-only variables must be entered, cannot be computed,

and are often limited to a specified range, for example,

P/Y and C/Y. The

value for an enter-only variable can be:

• Entered directly from the keyboard.

• The result of a math calculation.

• Recalled from memory.

• Obtained from another worksheet using the last answer feature.

When you access an enter-only variable, the calculator displays the

variable label and ENTER indicator. The ENTER indicator reminds you to

press ! after keying in a value to assign the value to the variable.

After you press !, the  indicator confirms that the value is assigned.

Compute-Only Variables

You cannot enter values manually for compute-only variables, for

example, net present value (

NPV). To compute a value, display a

compute-only variable and press %. The calculator computes and

displays the value based on the values of other variables.

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Texas-instruments BA II PLUS Manuel d'utilisateur Page 21