Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,639

I have extended my Binary/Decimal/Hexadecimal Converter to make a more general Base Conversion Tool (prompted by the 0.999... = 1 conversation running in another thread)

I have included the most-used bases, and also the rather fun "26 Letters" one.

PLEASE check it over and report any errors or strange behavior !

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

Ooh, very fun. I haven't found any bugs in it yet, and it's all very easy to use. I got a bit confused that 0 in Dec goes to Z in Letters, but then I realised that that actually made sense.

Speaking of the letters base,

9 2068 229455 228096070 1637421

Why did the vector cross the road?

It wanted to be normal.

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,639

Well Done! You can!

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**Devantè****Real Member**- Registered: 2006-07-14
- Posts: 6,400

mathsyperson wrote:

9 2068 229455 228096070 1637421

407952, 509 2068 9.

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

Awesome, I'll take a look.

Aside from that, on TI Calculator page, the word "processor" is mispelled.

**igloo** **myrtilles** **fourmis**

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

Hey, my favorite one so far in base-26 is 0.04, which is Z.AAAAAAAAAAAA

So 1/25th is analogous to 1/9th in base-10, in that they both repeat 0.11111111111,

or Z.AAAAAAAAAAAA

This is so cool, man.

Ya gotta love it.

**igloo** **myrtilles** **fourmis**

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

One tiny bug, if you type "B.YYYYY" all is fine, but if you hold and repeat the YYY's for a ways, the point YYYYYYYYY part goes to zero, and the B is left at a value of 2, instead of 3.

All note 0.YYYYYYYYYYY versus .YYYYYYYYYYYYYYYYYYYY, which disappears.

Love this thing though, nice work, master MIF.

**igloo** **myrtilles** **fourmis**

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

Note that 1000 is ALL

4646 is FVR

and 2222 is AFVR

Just havin' fun with this...

_______

oh, I'm back....

I typed in 2007 and it said BYE!!!

(smile)

...I'm back again...

and SLING is interesting in decimal, as is AUNT.

I'll have to try the base-20 next...

....Back again...

Oh, the hex drum set is really nice sounding!

Excellent idea, math and rhythm.

A sort of multiplexer to pick hi-hat tom bass etc.

*Last edited by John E. Franklin (2007-01-12 16:58:19)*

**igloo** **myrtilles** **fourmis**

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,639

Thanks John, fixed it!

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**justlookingforthemoment****Moderator**- Registered: 2005-05-26
- Posts: 2,161

I can delete/add/change text where it originally says 'A=1, B=2, C=3, ... X=24, Y=25, and Z=0' in green underneath the two conversion boxes.

Is it meant to be like this (for a reason)? My changes don't stay permanently of course but I was just wondering.

Well, apart from that, this is cool. I like how the conversion is live.

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,639

LOL! That is something I completely overlooked ... will protect it from editing.

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

In case you missed by post about the repeating Y problem.

Here is the point where it is right in base 26:

A.YYYYYYYYYY which equals 1.99999

Here is where is fails:

A.YYYYYYYYYYY which is says incorrectly equals just 1, but should say 1.99999 or 2.

When it fails, it is off by one, which is not a good thing.

**igloo** **myrtilles** **fourmis**

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,639

Eeek ... thanks for that. I will try to discover why.

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,639

OK, I posted a new version, that handles fractional components rounding to 1.

Thank you so much for pointing this out John. It works for me now, but maybe you could give it a test. Software is only as good as the tests it has passed!

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

I was just teaching my Mom about counting in base-3, base-9, base-15, and base-10 with this:

Counting in different bases

Thanks MathIsFun!! I was also finding non-prime numbers in base-3 today by multiplying in base-3 by

hand, which is fun to do!

**igloo** **myrtilles** **fourmis**

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,639

Thanks John.

Maybe I should give that little app a page on its own.

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

Not sure, how are most pages found my a new user to the site?

There are probably 2 or more ways to some pages with the search or index?

What if someone wanted to skim every single page

from the site, could there be a "book-order" they could

utilize? And keep clicking "next page" ?

*Last edited by John E. Franklin (2010-01-24 05:03:38)*

**igloo** **myrtilles** **fourmis**

Offline

Pages: **1**