Texas Instruments TI-25X Solar Handleiding
Texas Instruments
Rekenmachine
TI-25X Solar
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1.ENG
The TI.25X Solar Calculator
The TI-25X Solar calculator offers you a wide range of
mathematical and statistical capabilities. This manual
explains these capabilities.
Basic Operations
To turn the calculator on, expose the solar panel to
adequate light and press + ([ ON]).
Key
Function
+
([ON])
If the calculator is off, turns the unit on,
clears the display, and resets angle units to
degrees.
-
When pressed once during a calculation
(but before an operation key), clears the
displayed entry and any error condition (E).
You can make a new entry and continue
with your calculation.
Pressing
-
does not clear the memory,
statistics register, or angle-unit setting.
`
Instructs the calculator to perform the
second function (written above the key) of
the next key pressed.
2.ENG
The Display
You can enter a maximum of eight digits in the display. Any
digit key pressed after the eighth is ignored.
Indicator
Meaning
–
The displayed number is negative.
2nd
The
`
key has been pressed to access
the second function (written above the key)
of the next key pressed.
D
Angle units are set to degrees.
R
Angle units are set to radians.
G
Angle units are set to grads.
( )
One or more parentheses are open.
STAT
The calculator is in statistics mode. That is,
the statistics register contains data.
K
A number and operation are stored as a
constant.
M
A number other than zero is stored in
memory.
E
An error has occurred. You must press
-
or
+
to clear the error.
3.ENG
Scientific Notation
In scientific notation, a number is expressed as a mantissa
multiplied by 10 raised to a power (exponent).
Key
Function
a
Example: To enter 1.2345 × 10
6
:
1.2345
a
6 1.2345 06
`
\
Removes a displayed result from scientific
notation and displays it in standard decimal
format.
Entering a Number in Scientific Notation
1. Enter the mantissa. If it is negative, press @.
2. Press a. Two zeros appear on the right side of the
display.
3. Enter the exponent (one or two digits). If it is negative,
press @. If you press an incorrect digit key, just
reenter the correct digits.
Converting a Number to Scientific Notation
To convert a displayed number from standard display
format to scientific notation, press n 1 a l.
mantissa
exponent
floating mantissa sign
exponent sign
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Rekenmachine |
| Model: | TI-25X Solar |
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