Getting
Started
9
Figure 4
At this point, to return to the display of the
Fixed
menu item shown in
Figure 3, press
O
.
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
