Binary help?

[iBlueBox]

We where doing an introduction to Binary today in ICT. I didn't really get my head around how it works,

Can someone explain to me?

also,

What's hexonigal Binary ( can't remember the exact spelling )

[Pawf]

I don't get why they still continue to make a massive deal out of binary. Except maybe in a computer history lesson lol. The only use I have for it in day-to-day job is piddling around with subnet masks. What is it that you don't get? As long as you have a basic understanding, that'll get you by!

EDIT: This is a good explanation: http://php.about.com/od/programinggl.../qt/binary.htm

[iBlueBox]

Aha I think I'm understanding turning numbers into binary now,

But how do you work out binary to numbers?

[Chippiewill]

16 8 4 2 1
1 1 1 1 1 = 31
0 0 0 0 0 = 0
0 0 0 0 1 = 1
1 0 0 0 0 = 16
1 0 1 0 0 = 20

If there's a one under the number you add it to your base-10 number.

Hexadecimal you don't really need to know, but it's base-16 with digits 0-15 (Base-10 is digits 0-9)

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 - Base-10
0 1 2 3 4 5 6 7 8 9 A B C D E F - Base-16

So A1 would be 111, F1 would be 151, 160 would be FA etc. bit confusing because our minds are trained to think in base-10, it's like trying to perceive a fourth dimension -- way easier to percieve the first, second and third dimension.

[Recursion]

16 8 4 2 1
1 1 1 1 1 = 31
0 0 0 0 0 = 0
0 0 0 0 1 = 1
1 0 0 0 0 = 16
1 0 1 0 0 = 20

So what if you wanted 32 for example?

[CrazyLemurs]

In that example, you would have to move into the next column. It's like going up in 10s in the decimal system.
9 becomes 10 (adding an extra digit), just like in binary, 11111 becomes 100000.
11111 is 16+8+4+2+1, but 100000 is 32. Sometimes when binary is given in a textbook, it will say up to 127 or 255. These are the limits of 8 and 9-digit binary numbers.

[Chippiewill]

So what if you wanted 32 for example?

Either you genuinely don't know (Somehow) or you're trolling me.

You just extend the table left adding 32 as an option, you can keep adding multiples of 2 all you like.

[CrazyLemurs]

Just to note, I've just started the new-ish Computing GCSE, and part of the syllabus is understanding binary. It's really quite important in that field. It is also useful in I.T., for different reasons.

[Zak]

So what if you wanted 32 for example?

32 |16 | 8 | 4 | 2 | 1 |
1 | 0 | 0 | 0 | 0 | 0

but you know that
**** formatting!!!

[Recursion]

Either you genuinely don't know (Somehow) or you're trolling me.

You just extend the table left adding 32 as an option, you can keep adding multiples of 2 all you like.

I legit didn't know, but now you say that, I realise how much of an idiot I was. LMAO.

I don't deal with this rubbish on a daily basis!