User Manual
Page 27
...dim (especially during calculations), and you must adjust the contrast to a setting of the display contrast. When to zero, the display may appear very dark after you change the contrast setting, the display contrast changes, and a number in memory when the TI.82 is retained in the... upper right corner indicates the current contrast setting between 0 (lightest) and 9 (darkest). The contrast setting is turned off. As you change batteries. Setting the Display Contrast The brightness and contrast of the display depends on ...
...dim (especially during calculations), and you must adjust the contrast to a setting of the display contrast. When to zero, the display may appear very dark after you change the contrast setting, the display contrast changes, and a number in memory when the TI.82 is retained in the... upper right corner indicates the current contrast setting between 0 (lightest) and 9 (darkest). The contrast setting is turned off. As you change batteries. Setting the Display Contrast The brightness and contrast of the display depends on ...