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To choose for example “temperature”, shortly press the menu-key (middle key in
row 2 in 3 x 3 group) and Platon XL will once again announce the conversion rate.
You can now type in the number you like to convert, e.g. 30. To convert this number
into degree Fahrenheit, press both the point-key and the equals-key (4 x 4 group,
row 4, columns 2 and 3) and Platon XL will announce “degrees Celsius equals 86
degrees Fahrenheit”. To re-convert this result to degree Celsius, press both the
equals-key and the plus-key (4 x 4 group, row 4, columns 3 and 4).
5.4.1: Currency Conversion
The default setting of the Platon XL provides the conversion from Euro to US Dollar
and vice versa, with an exchange rate 1.373. You can easily adapt the exchange
rate. To do so, choose the function “currency” from the conversions submenu and
press and hold the menu-key (3 x 3 group, row 2, middle key). Type in the
exchange rate you need and confirm by shortly pressing the menu-key again.
Platon XL will now use this new exchange rate when converting currencies.
5.4.2: Custom Conversion
If the default settings do not offer the conversion you are looking for, you can set
your individual conversion rate by choosing the function ‚custom conversion‘. When
the function is selected, press and hold the menu-key (3 x 3 group, row 2, middle
key) and type in the conversion rate you need. Confirm by shortly pressing the
middle key. You can now calculate with your individual conversion rate.
5.5: Financial Calculator
Platon XL also offers you commercial formulas to calculate compound interest, net
present value or annuities. To activate the formulas, choose the function ‘financial
calculator’ from the conversions submenu and press and hold the menu-key. Select
a formula by shortly pressing the right or left key of the same row and confirm by
pressing and holding the the menu key.
5.5.1: Compound Interest
This formula helps you to calculate an end capital on the basis of a certain initial
capital and a given duration and percentage.
Example:
You have a certain amount of money (initial capital) on your savings
account. You know, that your bank offers you a certain interest rate (percent) and
you decide to keep this amount of money on your account for e.g. 5 years
(duration). After typing in all this information, Platon XL will announce how much
money you will have on your savings account after those 5 years including the
interest given by your bank.
After selecting the formula, Platon XL asks you to type in the initial capital. Do so
and confirm by shortly pressing the menu key (3 x 3 group, row 2, middle key).
Platon XL repeats the value and asks you to type in the percentage. Do so and
confirm by shortly pressing the menu key again. Platon XL will repeat the percent
