Setting The Default Units For Displayed Results - Texas Instruments TI-89 Manual Book

Setting the Default Units for Displayed Results

If You're Using the
SI or ENG/US
System
Setting Custom
Defaults
Note: You can also use
setUnits() or getUnits() to
set or return information
about default units. Refer to
Appendix A.
Tip: When the CUSTOM
UNIT DEFAULTS dialog box
first appears, it shows the
current default units.
What is the NONE
Default?
Note: NONE is not available
for base categories such as
Length and Mass that have
no components.
All results involving units are displayed in the default unit for
that category. For example, if the default unit for Length is _m,
any length result is displayed in meters (even if you entered
_km or _ft in the calculation).
The and systems of
SI ENG/US
measurement (set from Page 3
of the screen) use built-
MODE
in default units, which you
cannot change.
To find the default units for
these systems, refer to page 89.
To set custom defaults:
1. Press 3 ... B
3
Unit System = CUSTOM
2. Press D to highlight
.
DEFAULTS
3. Press B to display the
CUSTOM UNIT DEFAULTS
dialog box.
4. For each category, you can
highlight its default, press
B, and select a unit from the
list.
5. Press ¸ twice to save
your changes and exit the
screen.
MODE
Many categories let you select
This means that results in that
category are displayed in the
default units of its components.
For example, Area = Lengthñ
is the component of
Length
Area .
¦
If the defaults are
Area = _acre
results are shown with
¦
If you set
Area = NONE
Chapter 4: Constants and Measurement Units
If Unit System=SI or ENG/US, the
Custom Units item is dimmed.
You cannot set a default for
to set
.
SET
You can also move the cursor by
typing the first letter of a unit.
as the default unit.
NONE
, so
and
Length = _m
_acre units.
, area results are shown with
individual categories.
(meters), area
units.
_mñ
87