Chapter 4: Constants And Measurement Units - Texas Instruments TI-89 Manual Book

Chapter 4:
Constants and Measurement Units
4
Note: Constant and unit
names always begin with an
underscore _ .
Note: You can also use
to get a list of the
getUnits()
default units or
setUnits()
set the default units. Refer
to Appendix A.
Preview of Constants and Measurement Units .................................... 82
Entering Constants or Units ................................................................... 83
Converting from One Unit to Another................................................... 85
Setting the Default Units for Displayed Results .................................. 87
Creating Your Own User-Defined Units ................................................ 88
List of Pre-Defined Constants and Units............................................... 89
The dialog box lets you select the available constants or
UNITS
units from different categories.
This category lists
constant values.
Remaining categories
list available units.
( ...) of the
Page 3
systems of measurement to specify the default units for displayed
results.
to
By using the unit features, you can:
¦
Enter a unit for values in an expression, such as 6_m ù 4_m or
23_m/_s ù 10_s. The result is displayed in the selected default
units.
¦
Convert values from one unit to another within the same
category.
¦
Create your own user-defined units. These can be a
combination of existing units or unique "standalone" units.
dialog box lets you select from three
MODE
International system of
measurements (metric or
MKS) - meters, kilograms, etc.
English system - feet,
pounds, etc.
Lets you select the units you
want to use.

Chapter 4: Constants and Measurement Units

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