scientific calculators

espeon · 2006-09-29 04:21:46

its been bugging me for ages now but what does the hex and the other thingymagigies buttons do?

Devantè · 2006-09-29 04:51:04

'thingymagigies'? Please be more specific. All that stuff basically is the stuff you will probably be needing in a few years. You needn't worry about that right now.

mathsyperson · 2006-09-29 06:00:54

It probably converts a number into base 16. Or, if you press hex and write a number, you can then press DEC or whatever the other button is to convert base 16 numbers into normal ones.

BIN and OCT might also be there.

Patrick · 2006-09-29 06:06:47

The scientific calculator that comes with windows has Hex, Dec, Oct and Bin

Devantè · 2006-09-29 06:07:02

DEC/Base 10 is probably all that is needed right now.

espeon · 2006-09-29 06:22:25

um i think its dec oct bin and hex. but whats a base?

Devantè · 2006-09-29 06:24:32

Base 10 is like our number system. Different bases are like...hmm, how can I explain this...binary? The rule of binary is that you can only use 1 and 0. Where in Base 10, you can use 0 1 2 3 4 5 6 7 8 9.

polylog · 2006-09-29 07:21:04

We use "base 10 numbers" because we use 10 digits: 0 to 9.
And when we count we start a new column after we get past 9 to 10, and start counting starting with 1 in that column again:
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, ...

.. but thats not the only way it can be done! In Hex (hexadecimal) numbers we use 16 different digits, so when we count 7, 8, 9, ... we dont start another column and write 10. We use the letters A, B, C, D, E, F *as digits*. We only start a new column when we get to the digit F. The digits A to F have the values 10 to 15: A means 10, B means 11, and so on.
So counting in hex goes like this:
1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 1A, 1B, 1C, 1D, 1E, 1F, 20, 21, ....

Notice that once we pass 'F', we have to start another column just as in regular decimal number counting.

Put your calculator into "hex mode" and try 1 + 9, 2 + 9, 3 + 9 and see what happens!

But: why would anyone do this? Well, its important for storing numbers inside computers. But thats a large topic.

Devantè · 2006-09-29 07:38:27

I like doing the hexodoku. It helps me learn the language base by heart a little more.

Last edited by Devanté (2006-09-29 07:38:40)

espeon · 2006-09-29 07:42:49

i really dont get this lol...

Devantè · 2006-09-29 07:45:47

Hexodoku is a 16x16 grid. You use the hex language (Base 16) to solve the sudoku variant. That means you use 0 1 2 3 4 5 6 7 8 9 A B C D E F.

espeon · 2006-09-29 07:58:03

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa where did the purple blodges come from? and why are there green stars everywhere?

Devantè · 2006-09-29 07:59:33

...you have some sort of significant splodge of paint in your eyes? Or you're looking into a collidoscope.

polylog · 2006-09-29 15:04:16

Devanté wrote:

I like doing the hexodoku. It helps me learn the language base by heart a little more.

sounds like fun

@ espeon - I don't think you'll ever need to know about hex and bin and oct unless you take Computer Science courses at some point or want to study computers or electrical engineering or something closely related.

But if you want to learn them just for fun, I can try to explain more. just ask!

Devantè · 2006-09-29 18:54:29

I have yet to try the binodoku, ternadoku, octadoku and the duodecidoku sudoku puzzle variants.

Obviously the difficulty of the binodoku would be laughable.

espeon · 2006-09-29 19:03:19

dont worry then

justlookingforthemoment · 2006-09-29 19:19:54

Devanté wrote:

binodoku

____ ____
| | |
| 0 | ? |
|____|___ |
| | |
| ? | ? |
|____|___ |

Devantè · 2006-09-29 19:49:27

0 1
1 0

?

luca-deltodesco · 2006-09-29 21:20:28

i would not like to try a 'name for base 64'doku puzzle. darn that would be big!

base 64 goes like

ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/

yes, +/ are used as digits lol

Last edited by luca-deltodesco (2006-09-29 21:21:49)

Devantè · 2006-09-29 21:25:21

Really? I didn't know that.

A Base 64 puzzle would be evil. Only a masterminded genius could think up something like that.

mathsyperson · 2006-09-29 23:49:39

You could say that normal Sudoku puzzles were in base 64. It's just that not all the one-digit numbers in the base are used.

Devanté wrote:

ternadoku

____ ____ ____
| | | |
| 1 | | |
|___ |____|___|
| | | |
| | | |
|___|____|____|
| | | |
| | | 2 |
|___|____|____|

Devantè · 2006-09-30 01:42:29

3 2 1
2 1 3
1 3 2

polylog · 2006-09-30 05:49:02

I wonder if the ancient Babylonians played base-60 Sudoku ....

Devantè · 2006-09-30 05:55:36

I also wonder if some of the ancient Babylonians' discoveries weren't just big hoaxes pulled off by the media.

justlookingforthemoment · 2006-09-30 13:31:01

Devanté wrote:

3 2 1
2 1 3
1 3 2

But the one has to be in the top left-hand corner!

1 2 3
2 3 1
3 1 2

Math Is Fun Forum

#1 2006-09-29 04:21:46

scientific calculators

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Re: scientific calculators

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Re: scientific calculators

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