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Although the D'ni calculator is very simple to use, I think I should give a short introduction.
The Calculators' buttons have different colors:
white data entry
yellow     basic calculation
red Special commands
green torans/degree conversion   
blue Sign change


White buttons:
--
You can either type Arabian digits or D'ni digits. Example:
,,     possible
,,    possible
,,     not possible

Yellow buttons:
,,,,
I think I don't have to write much about this buttons. They are working like in any calculator. You can see the last pressed operation sign at(?in) the left side of the D'ni-display. If you haven't typed a number, you can change the operation sign by pressing another yellow button (Note: only works with +, -, x, ÷, not with =).
Although it is not possible to mix up D'ni digits and Arabian digits, it's possible to mix up D'ni and Arabian numers. Example:
,,,,     possible

Red buttons:
,,,
The -Button starts a completely new calculation.
The -Button deletes the actual number. This is useful if you typed a wrong number and don't want to start a new calculation.
The -Button deletes the last digit. Example:
,,, : The display will show:
,,, : The display will show:
With the-Button you can decide if the calculator will round the result, or if it cuts off the digits after the comma. I had to introduce this button because the D'ni calculator can't show commas. We do not know how the D'ni wrote numbers like 0.5 or pi, for example.And I didn't want to make my calculator being wrong. (btw, have you ever thought about this: How wrote the D'ni 0.5? They could use a comma: [0][,][12][12][12][12][12]...! I don't think that is very useful. Or they could use a fraction line: [1][/][2]. But then, how would they write numbers like pi?)

Green buttons:
,
This button converts a number into torans.
This button converts a number into degree.
Example:
,,,: The display will show: , because 860 torans are ca 5°.

The Blue button:
This button changes the sign. 349 will change to -349, for example.

 

Some other notes:
1. If the calculator rounds a number, this is shown by these signs:
   (arabian numbers)
  (D'ni numbers)
2. If you cause an error (Example: 34 ÷ 0 ), the displays will show this:
      (arabian numbers)
  (D'ni numbers)
 This is like if you had pressed the -Button, so you don't have to press or again.
3. JavaScript is not a very fast language, so don't be impatient if you use my program.

 

Enjoy!


Simon Riedl
September 1999

Myst ® , Riven ® , D'ni ® and the D'ni language are registered trademarks of Cyan, Inc.
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