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# Tech Society 2.0 watch

1. (Original post by secretmessages)
I have 10 pages to write in not many hours
Graphs.
2. This wikileaks stuff is interesting. A D-Notice has now been issued in the UK
3. (Original post by Chrosson)
Graphs.
Pics don't count

(Original post by Chrosson)
This wikileaks stuff is interesting. A D-Notice has now been issued in the UK
I'm looking forward to it
4. (Original post by alexsheppard)
...
Seen the new XPS 15?
http://www1.euro.dell.com/content/pr...=ukdhs1&~ck=mn
5. (Original post by spikeymike)
Anyone know how I can do this CRC long division?

11001 / 101110111010000

Edit:
I can do it, but how do I get started with this one? 11001 doesn't go into 10111

Edit2:
Divide 11001 by 101110?
Code:
```111111111111
11001/101110111010000
11001
11100
11001
10111
11001
11101
11001
10001
11001
10000
11001
10010
11001
10110
11001
11110
11001
r111```
I think... (Sorry, code tags aren't working properly )
x
Pre tags kinda work Your post in pre:

111111111111
11001/101110111010000
11001
11100
11001
10111
11001
11101
11001
10001
11001
10000
11001
10010
11001
10110
11001
11110
11001
r111
Code:
```111111111111
11001/101110111010000
11001
11100
11001
10111
11001
11101
11001
10001
11001
10000
11001
10010
11001
10110
11001
11110
11001
r111```
I think... (Sorry, code tags aren't working properly )
If I understand the formatting correctly,

The first thing you did was 10111/11001 = 1 - How is that 1, when its equiv. to 23/25 which is <1 ?
8. (Original post by spikeymike)
If I understand the formatting correctly,

The first thing you did was 10111/11001 = 1 - How is that 1, when its equiv. to 23/25 which is <1 ?
No, don't think of it in the decimal sense - rely solely on the binary subtraction. Generally speaking in the field of error correction, the quotient you derive from the long division is irrelevant, all you're interested in is the remainder at the end.

All you need to do to do the long division is:

10111/110010...

so you take the number you're dividing into (up to the number of digits you're dividing by):
11001
Then use a simple binary subtraction (bitwise XOR):
11001
10111 -

We don't care about the quotient, so you can just write the result of the subtraction underneath (and we disregard any leading 0's as they're irrelevant)

Thus:
11001
10111 -
1110 ----- note that 1-1=0, but it's a leading 0 so it's ignored.

You then drop down as many numbers as you need from the number you're dividing into, to make the next subtraction:

11100

You then repeat the process:

11100
10111 -

etc.

Do you follow?
No, don't think of it in the decimal sense - rely solely on the binary subtraction. Generally speaking in the field of error correction, the quotient you derive from the long division is irrelevant, all you're interested in is the remainder at the end.

All you need to do to do the long division is:

10111/110010...

so you take the number you're dividing into (up to the number of digits you're dividing by):
11001
Then use a simple binary subtraction (bitwise XOR):
11001
10111 -

We don't care about the quotient, so you can just write the result of the subtraction underneath (and we disregard any leading 0's as they're irrelevant)

Thus:
11001
10111 -
1110 ----- note that 1-1=0, but it's a leading 0 so it's ignored.

You then drop down as many numbers as you need from the number you're dividing into, to make the next subtraction:

11100

You then repeat the process:

11100
10111 -

etc.

Do you follow?
I understand the process but just got confused at the first step. Thanks.
10. (Original post by spikeymike)
I understand the process but just got confused at the first step. Thanks.
No worries

I've only just done this myself, so it was good revision at 1:20am
11. Why is it when you sign on for the day (and make no posts), your last quote was hours ago then a minute later, you have two new quotes. It's like picking up a mobile and suddenly receiving a text message. You feel like you've been endowed with godly powers.

Also:

Fail of the day

EDIT: Nevermind
12. (Original post by Ape Gone Insane)
Why is it when you sign on for the day (and make no posts), your last quote was hours ago then a minute later, you have two new quotes. It's like picking up a mobile and suddenly receiving a text message. You feel like you've been endowed with godly powers.

Also:

Fail of the day

EDIT: Nevermind
Quite.
13. Ohhh Chrosson, your avatar is soooo 90s clipart
14. Scanning my PC after it just had a stupid slow-down attack

:
Spoiler:
Show
16. (Original post by secretmessages)
Ohhh Chrosson, your avatar is soooo 90s clipart
its very 1998 geocitys/angelfire,wouldn't look out of place somewhere like this...

http://www.dokimos.org/ajff/
17. (Original post by gamer91)
its very 1998 geocitys/angelfire,wouldn't look out of place somewhere like this...

http://www.dokimos.org/ajff/
My eyes... They burn!

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