Texas Instruments BA II PLUS User Manual page 29

Prompted-worksheet Variables
To access the column of variables within a prompted worksheet
(or portion of a prompted worksheet), press the appropriate
worksheet key or key sequence.
For example, to access the amortization variables , , ,
P1 P2 BAL
, and (first payment in a range, last payment in a range,
PRN INT
remaining balance, principal, and interest), press & \.
This is the prompted worksheet for amortization calculations.
Press # and " to move to the next or previous variable in a
prompted worksheet. Different variable labels and values are
displayed. Indicators in the display prompt you to select
settings, enter values, or compute results.
To return to standard-calculator mode, press & U .
There are five types of worksheet variables:
• Enter-only
• Compute-only
• Automatic-compute
• Enter-or-compute
• Settings
Enter-Only Variables
You cannot compute a value for enter-only variables. Values
may be limited to a specified range. 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 variable label and
the indicator are displayed. The indicator also
ENTER ENTER
reminds you that once you have keyed a value into the display,
you must press ! to assign that value to the variable. An =
sign is displayed between the label and the value when the
value has been assigned to the variable.
1: Overview of Calculator Operations 23