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Operating the TI
-
83 1-3
8301OPER.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:09 PM Printed: 02/19/01 1:34
PM Page 3 of 24
You can adjust the display contrast to suit your viewing
angle and lighting conditions. As you change the contrast
setting, a number from
0 (lightest) to 9 (darkest) in the
top-right corner indicates the current level. You may not be
able to see the number if contrast is too light or too dark.
Note:
The TI
.
83 has 40 contrast settings, so each number
0
through
9
represents four settings.
The TI
.
83 retains the contrast setting in memory when it is
turned off.
To adjust the contrast, follow these steps.
1. Press and release the
y
key.
2. Press and hold
†
or
}
, which are below and above the
contrast symbol (yellow, half-shaded circle).
•
†
lightens the screen.
•
}
darkens the screen.
Note:
If you adjust the contrast setting to
0
, the display may become
completely blank. To restore the screen, press and release
y
, and
then press and hold
}
until the display reappears.
When the batteries are low, a low-battery message is
displayed when you turn on the calculator.
To replace the batteries without losing any information in
memory, follow the steps in Appendix B.
Generally, the calculator will continue to operate for one
or two weeks after the low-battery message is first
displayed. After this period, the TI
.
83 will turn off
automatically and the unit will not operate. Batteries must
be replaced. All memory is retained.
Note:
The operating period following the first low-battery message
could be longer than two weeks if you use the calculator infrequently.
Setting the Display Contrast
Adjusting the
Display Contrast
When to Replace
Batteries