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	Probable Error Calculator 1.5
	Copyright(C) 1998
	Hyun Suk Noh

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 First of all, I would like to thank you for using my program. As you know, this is a probable error calculator. You can simplify your calculations involving probable errors, a lot.

 The reason I made this program is that I am a student still, and I find it really frustrating, when I do the calculations with probable errors. I have no idea if any of your teachers would not allow to use this sort of program, but I just wanted to make life easier for everyone. I am sure you will save time(at least a few minutes), when you do your lab reports(most of teachers tell you to include probable errors). If you disagree with my idea(I am kind of sure, no one would disagree with this...), e-mail me to the e-mail address written below. If you successfully pursuade me, I will stop making this program.




How to use it
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 This calculator is really similar to the ordinary calculator, except that there is an additional text box, which is used for the probable. You may ignore the textbox, when you are doing calculations that does not involve any errors.

 There are two ways of writing your number into the textboxs. Either you click on the text box and type in the number, when the cursor appears, or click on the number buttons. On future versions, you will also be able to input with number pad on your keyboard.

 Then, click on any of the operator button.

 [+], [-], [], [] - These button are exactly what they mean. Click on  any of these buttons and input another number(may/may not be number with error).

 [Root] - This is for the root. After clicking on this button, input a number(2 for square root, 3 for cube root, and so forth and so on).

 [Pow] - This is for the power. After clicking on this button, input the number you want to raise it to(2 for square, 3 for cube, an so on).

 for [Root], and [Pow], the error part of the number entered is ignored. You may still input some value in the error part, but these functions will never use that error.

 After this, click on [ = ] button to get the answer.



 *Your answer might have too little digits below dicimal point, for some calculations. In this case, redo the calculation with more '0s'(zeros) after the number you input(only the number. The 0s after the error value does not make any difference.). I hope to be able to fix this by the release of next version.




Other functions
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[MS] - This is what MS button in an ordinary calculator is. You will save the value on the textboxes, by clicking this button.

[MR] - This is the button to restore(read, or put back) the value you saved with [MS] button. If there wasn't any value saved, this button will not to anything.

If you click on [MS] to save the value, the previouse values will over-written by the new value.

[Exit] - This is the button for quitting this program.



Functions not available
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You will see [Copy] button disappeared on this program. This function is to copy the value in the text value to clipboard, so that you can simply click on 'Paste' button to copy the value in word processors, and other programs. However this function is not available, in this version. I hope to include this function to the future version.

And, as I mentioned earlier, I will make it possible to just use number pad on your keyboard to input the values. The adventage of this function is that this way of input is the fastest for a calculator. Because of some technical problem, I was not able to include this function. Just wait for the future version.

Lastly, I will briefly tell about addtional functions I will include in future versions.
 - Significant digit calculation will be done at the same time. This function will also fix the problem with too little digits below decimal point.
 - I will include negation function or -(negative) sign. I just found out that you cannot input negative values. I am sure I will do this.





Once again, I really would like to thank you for using this program. If you find any bug(error), you have any question, comments, or if you have any function you want me to include, please contact me directly if possible, or just send me an e-mail to the following addresses.

	hyunsuk@i-manila.com.ph
	hsnoh@yahoo.com



                                  - Hyun Suk Noh -