HP 20b Consultant Financial manual Basic Features There are four types of menu items

Basic Features

There are four types of menu items:

1.Read/write. Read/write menu items, such as Price= 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 entering a number and pressing

Iwill store the entered number in the displayed menu item. By pressing =(outside of a mathematical operation) you will then calculate the value for that item based on data entered elsewhere in the menu.

2.Read-only.Read-only items such as Internal Rate of Return (IRR%= ) in the IRR menu are display-only; they are calculated 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 entering a number and pressing Istores

that number in that menu 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 Iis

pressed. Depending on the menu, this action can be the selection of a sub-menu in the %calc menu, changing a mode or setting in the Mode menu, or erasing data with the Reset menu.

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