HP (Hewlett-Packard) NW280-1001 ユーザーズマニュアル

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3

Adapter Warning

• To reduce the risk of electric shock or damage to equipment, only plug the wall adapter into an AC outlet that is easily 

accessible at all times.

• To reduce other potential safety risks, only use the wall adapter provided with the calculator, a replacement wall adapter 

provided by HP, or a wall adapter purchased as an accessory from HP.

To turn the calculator on, press 

O

. To turn it off, press 

SO

 (Off).

To adjust the brightness of the screen, press and hold 

O

 and then press either 

+

 or 

w

 repeatedly. Pressing 

+

 increases 

the brightness; pressing 

w

 decreases it.

Home view is the starting point for many calculations. Press 

H

 to display it. 

Home view has four sections (shown at the right). The title bar shows either the 

screen name or the name of the app that is currently selected—Function in the 

example at the right. It also shows the time, a battery power indicator, and a 

number of symbols that indicate various calculator settings. These are explained in 

the User Guide. The history displays a record of your past calculations. The entry 

line displays the object you are currently entering or modifying. The object could 

be a parameter, expression, list, matrix, line of programming code, etc. The menu 

buttons are options that are relevant to the current display. These options are 

selected by tapping the corresponding menu button. (Only a labeled button has a function.) Some menu buttons open a further 

menu. You close such a menu without making a selection from it by pressing 

J

.

Title bar

History

Menu buttons

Entry line