Operation Manual

Operating the TI

82 1-3

8201OPER.DOC TI-82, Chapter 1, English Bob Fedorisko Revised: 02/09/01 12:18 PM Printed:

02/09/01 12:35 PM Page 3 of 22

Setting the Display Contrast

The brightness and contrast of the display depends on room lighting, battery

freshness, viewing angle, and adjustment of the display contrast. The contrast

setting is retained in memory when the TI

82 is turned off.

Adjusting the Display Contrast

You can adjust the display contrast to suit your viewing angle and lighting

conditions at any time. As you change the contrast setting, the display

contrast changes, and a number in the upper right corner indicates the

current contrast setting between 0 (lightest) and 9 (darkest).

Note that there are 32 different contrast levels, so each number 0 through 9

represents more than one setting.

To adjust the contrast:

1. Press and release the

key.

2. Use one of two keys:

To increase the contrast, press and hold

}

To decrease the contrast, press and hold

†

Note: If you adjust the contrast setting to zero, the display may become

completely blank. If this happens, press and release

and then press and

hold

}

until the display reappears.

When to Replace Batteries

When the batteries are low, the display begins to dim (especially during

calculations), and you must adjust the contrast to a higher setting. If you

find it necessary to set the contrast to a setting of 8 or 9, you should replace

the four AAA batteries soon.

Note: The display contrast may appear very dark after you change

batteries. Press and release

and then press and hold

†

to lighten the

display.