Quick Start Manual

Getting Started 9

Figure 4

At this point, to return to the display of the Fixed menu item shown in

Figure 3, press

There are four types of menu items:

1. Read/write. Read/write menu items, such as Fixed in the Break-even

menu shown above, are easily recognizable, because when they are

selected, both the INPUT and small (=) annunciators are lit. When lit,

these annunciators indicate that keying in a number and pressing

I will store the entered number in the displayed menu item.

Pressing

= (outside of a mathematical operation) calculates the

value for that item based on available data.

2. Read-only. Read-only items such as Internal Rate of Return (IRR% ) in

the IRR menu are display-only; they are values computed internally by

the calculator.

3. Write-only. Write-only items, such as investment interest rate (Inv. I% )

in the Net Present Value (NPV) menu, are similar to read/write items in

that the INPUT annunciator is lit when these items are selected,

indicating that keying in a number and pressing

I stores that

number in that menu item. However, the

= key does not calculate a

value for that item.

4. Special items. Special items, such as the Degree/Radian option in the

Mode menu, the items of the Reset menu, and the items of the Percent

Calculation (%calc ) menu perform an action when

I is