1. ## Karen's Calculator

If you get hooked on high-precision calculating capabilities (like me), you might want to check <img src=/S/free.gif border=0 alt=free width=30 height=15> Karen's Calculator.
<hr>Karen's Calculator is a high-precision calculator. Unlike ordinary calculators, it returns completely accurate results, even with operands containing thousands of digits. If you're patient, operands and results containing hundreds of thousands of digits are possble too!

Most calculators are only accurate when dealing with numbers containing a few digits -- usually 16 to 32. When asked to calculate using larger numbers, they either fail (displaying an error) or return results that are only approximately accurate.

Karen's Calculator can easily handle numbers and results containing many thousands of digits with complete accuracy. It also includes an on-screen "tape" -- which can be saved to disk -- versatile memory features, and more!<hr>
This adds to the recent discussion on Calculators.

2. ## Re: Karen's Calculator

even with operands containing thousands of digits
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Phew! I can do my tax return now then.... <img src=/S/grin.gif border=0 alt=grin width=15 height=15>

3. ## Re: Karen's Calculator

<img src=/S/hmmn.gif border=0 alt=hmmn width=15 height=15> For me, all bar a very few of these thousands of significant digits are zeros.
At the left-hand side, too... <img src=/S/RollEyes.gif border=0 alt=RollEyes width=19 height=19>

John

PS Do we know anything about "C:WINDOWSsystem32NSIS.Library.RegTool.exe" that gets put into the HKLM RunOnce registry entry? I can find nothing about it on Karen's website...

PPS Isn't it amazing that, with whatever level of precision you choose, the standard calculator test 1 / 7 * 7 = does not produce the correct answer 1 (exactly) but 1.000...0001? Naff calculators (e.g. costing 88p from Tesco) usually give something like 0.9999997

4. ## Re: Karen's Calculator

John,

Only reference I could find with Google is to CVS entries for NSIS (Nullsoft Scriptable Install System).

Joe

5. ## Re: Karen's Calculator

Thanks, Joe -- I got something relating to a SourceForge project. These may be one and the same thing? In any event, it looks legit...

John

6. ## Re: Karen's Calculator

John,
Why don't use APL or J? If you type in 7 * 1 / 7, you'll get 1... if this is all you need (wide grin)

7. ## Re: Karen's Calculator

It's an awfully long time since I ever saw APL, back from the days when the video character set chip had to be changed on the IBM PC (XT or AT, it probably was) for a version which could display the APL characters!

As for J, I have never heard of it!

John

PS I didn't know there was a "New York" in Uruguay...!

8. ## Re: Karen's Calculator

John,
Thank you about Uruguay.. I will correct it shortly to U.S.A. (so close)
J is a newer language invented by Ken Iverson (who passed away just recently) around 1990 to use only the ASCII character set. Has a user conference every year and some companies developing REAL software in J.