Scientific Calculator

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CalcMatic 作

V1.1 2006/08/23 16:54:56

This two-line scientific calculator provides the look and feel of a real calculator. With a dedicated line for the equation and another for the result, complex equations can be written with ease. Numbers and simple functions can be input via the keyboard, while more advanced functions are available using the normal calculator buttons.

Current features include:

Trigonometry
Logarithms
Combinations and permutations
7 programmable memory locations
Pseudo-random number generator

If you don't like the default look, you can change it! Five different skins are provided.

Note: This calculator is only as accurate as the JavaScript runtime environment, floating point rounding errors can occur.

Version History:
1.1 - September 2006
* Reduced file size.
* Added keyboard input for numbers and basic functions.
* Added skin selector with preview.
* Added error messages for incorrectly formed equations.

1.0 - August 2006
* Initial release.

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All in good time. Casio have been making calculators for 49 years, this one is only 4 months old.

'degrees <--> deg min sec' can be added for the next release, but the rest will take a while to program.

CalcMatic 作 , # 2006/10/02 15:46:13

It looks like my Casio Fx570MS calculator.
I would suggest you add more useful features, e.g. degrees <--> deg min sec, numerical integration, statistics, base-n (HEX-OCT-DEC-BIN), linear equations... Then it would be a really faster Fx570...

cz_ma 作 , # 2006/10/02 5:42:39

Thank you for your suggestions, they should be implemented in the next release.

Please feel free to make any comments and suggestions, good or bad. Many improvements have been made from feedback.

CalcMatic 作 , # 2006/10/01 13:12:09

Suggestions:
powers of ten are difficult to work with..

If I work with small numbers, I want to type 3E-5 to say 0.00003 (didn't count the 0's here (c;= ). And I'd like not to use the mouse for operating the calculator, using the keyboard is much more convenient.

Oh, and an output of 0.00000000123 is pretty worthless. Any scientific calculator will show you 1.23E-9 or such.

WildEnte 作 , # 2006/09/30 0:41:08

OK, thanks! Great widget BTW!

JP83 作 , # 2006/09/28 13:14:51

Some documentation on its syntax and more advanced features will be available in due time.

The yellow and red text above the buttons, corresponds to the functions you can do via the 'shift' and 'alpha' buttons.

To add the result to the main memory, press the 'M+' button, to subtract from it, press the 'shift' button before the 'M+' button. To use that number in an equation, press the 'alpha' button and then the 'M+' button.

To store in the other six memory locations, the letters A to F, you need to press the 'STO' button followed by the button below the required letter. To use that number in an equation, press the 'alpha' button and then the button associated with that letter.

CalcMatic 作 , # 2006/09/27 14:08:32

I can't get those 7 memory locations to work ...

JP83 作 , # 2006/09/25 20:36:02

Great Calculator, thank you!

non-troppo 作 , # 2006/09/25 0:41:33

was missed ever,
reclaimed never,
thx !!

SpandauJerry 作 , # 2006/09/23 18:09:40

An excellent widget with superior capabilities !

A short explanation of the functions and input syntax would be most appreciated.

The Skins are all excellent.

hanspflugshaupt 作 , # 2006/08/29 9:02:41

It's USEFULL, looks great, and it WORKS!

A professional quality widget.

rawilkinson 作 , # 2006/08/28 22:27:14

Yeah, the main problem is you cannot save the skin. Apart from that it's great :-)

BrendanAdams 作 , # 2006/08/27 13:40:06

Skins is not saved.

Скины не сохраняются.

Dima64 作 , # 2006/08/27 13:24:52

Very good calculator. Much better than the windows calc in scientific mode!
It looks like my real one, so it's very easy to use for me

Wups 作 , # 2006/08/27 9:52:06

Wery nice skin but a bit slow when for ex. when you click 5 times on some number

I fno you should make the skin chooser as a dropdown menu

seifip 作 , # 2006/08/26 21:30:19

I've got to say the first skin is way better than all the others, especially the last one. And maybe you could make it a dropdown or something instead of going one by one through them all.

Strife767 作 , # 2006/08/26 17:55:19

This is much more useful than the windows calculator, still I would like to see an option that retains the powerer of the command line yet does away with the display restrictions of real calculators, then it would be my primary tool for calculations. At the moment I find that the most efficient way for me to make most complex calculations is to hard code them into javaScript and document.write() the results, but this could be better.

Benjamin Joffe 作 , # 2006/08/26 15:46:35