Using The Menu Keys; The Main Menu - HP -18C Owner's Manual

Using the Menu Keys
The six blank keys at the top of the keyboard and six labels on the
bottom line of the display are related to one another. The labels tell
you what the keys do. The labels are on the display, rather than on
the keys themselves, because the keys do different things at different
times. The six keys are called menu keys; the labels are called menu
labels.
Figure 1-4. Menu Keys and Menu Labels
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Depending on what calculations you are doing, the HP-18C displays
a particular set of labels, called a
menu .
The menu presents the
choices of what you can do next.
The MAIN Menu
No matter which menu you are currently using, pressing
. 1
MAIN
I
dis-
plays the
MAIN
menu. The
MAIN
menu is a set of primary choices.
Starting from the
MAIN
menu, you can eventually display any other
menu. Table 1-2 describes the types of operations done within each
major category.
1: Starting to Use the HP-18C 25