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Operating the TI-80 1-9
Modes control how numbers and graphs are displayed and interpreted by the
calculator. Mode settings are retained by the Constant Memory feature when the
TI
.
80 is turned off.
Press
3
to display the
MODE
screen. The current settings
are highlighted. The settings are described on the following
pages.
NORMAL SCI
Numeric display format.
FLOAT 0123456789
Number of decimal places.
RADIAN DEGREE
Unit of angle measure.
a
À
b
º
c b
º
c
Type of fraction display.
AUTOSIMP MANSIMP
Whether to simplify fractions.
FUNC PARAM
Type of graphing.
CONNECTED DOT
Whether to connect graph points.
SEQUENTIAL SIMUL
Whether to plot simultaneously.
To change the mode setting:
1. Press
8
or
7
to move the cursor to the line of the setting
that you want to change. The setting that the cursor is on
blinks.
2. Press
9
or
6
to move the cursor to the setting that you
want.
3. Press
¸
.
To leave the
MODE
screen:
¦
Press the appropriate keys to go to another screen.
¦
Press
y
.
or
M
to return to the Home screen.
You can set a mode from a program by entering the name of
the mode as an instruction; for example,
FUNC
or
FLOAT
.
From a blank line in the program editor (Chapter 10), press
3
to display a menu of the mode names, and then select
the name. The name is copied to the cursor location.
Setting Modes
Checking MODE
Settings
Changing MODE
Settings
Leaving the
MODE Screen
Setting a Mode
from a Program