Do you know? - Page 2

*Mindz* · 08-08-2007, 10:09 PM

Quote:

Originally Posted by marczsport

I'm almost afraid to ask what that "smilie" is all about! :eek:

bewbs

*Mr. Wyndham* · 08-08-2007, 10:17 PM

Quote:

Originally Posted by Mindz

bewbs

Okay, I've gotta say, I follow how binary works (I'm no expert, but I took a programming class once), but I don't get hex. I've never heard of it before.

*Mindz* · 08-08-2007, 10:37 PM

think of counting to 10.

1 2 3 4 5 6 7 8 9 then you start in the second colum with 10

this is base 10 or "decimal"

now hexadecimal (hex 6, decimal 10) is base 16
1 2 3 4 5 6 7 8 9 but we can't go to 10 just yet, you have to find a way to make it to 15 before 10. The way we do it is by starting to use letters.

7
8
9
A (10)
B (11)
C (12)
D (13)
E (14)
F (15)

then we hit 10. 10 is basically the number when you've run out of single digits. So in Hex (base 16) 10 is the equivalent to 16 in decimal (base 10)

20 in hex is the eqvuialent of 32 in decimal.

21 = 33
25 = 37

100 in hex is a little bit tricky. You start multiplying exponentially.

16squared's place 16's place 1's place

099 =
0 x 16 squared
9 x 16 = 144
9 x 1 = 9

153 is 99 if you're writing in hex.

0FF or just FF is 255 which is the equivalent of 99 in hex as it's the max amount of numbers before hitting 100 (One Zero Zero, not one hundred).

100 is calculated as follows

1 x 256 (16 squared)
0 x 16 (16)
0 x 1 (1)

therefore 100 in hex is the equivalent of 256 in decimal.

I know you probably didn't care to learn, but here is the explanation the best that I can put it while working.

*Mr. Wyndham* · 08-08-2007, 10:51 PM

So when you hit 19 in Hex, which is actually 25, what's the next number? Or is it 5 more letters again...

*Mindz* · 08-08-2007, 11:10 PM

1A
1B
1C
1D
1E
1F
20
21
22

*Mr. Wyndham* · 08-08-2007, 11:36 PM

Ah...I see. and continuing:

23
24
25
26
27
28
29
2A
2B
2C
2D
2E
2F
30

would be the next ones?

*Mindz* · 08-09-2007, 12:46 AM

hai.

*Mr. Wyndham* · 08-09-2007, 12:56 AM

Awesome, I understand 1% of a complicated topic! :p

*Mindz* · 08-09-2007, 01:45 AM

ok, now, work this out in decimal.

4A7

MerF · 08-09-2007, 08:22 AM

This is the point I have to stare at my student's keyboards. They tend to try their hardest to bust out the Microsoft calculators instead of just working it out.

Little f***ers!

4=0100
A=1010
7=0111
-------------
010010100111 (base2) = 1+2+4+32+128+1024 = 1191 (base 10)

I probably pencil-f***ed myself somewhere, feel free to check it!

*Mr. Wyndham* · 08-09-2007, 12:07 PM

Well, I got the 4=0100, and the 7=1000...but I can't figure out the A, nor do I have any idea how MerF got from 010010100111 to 1+2+4+32+128+1024...

You don't have to try and teach this stuff to me, you know

...I'll learn it if you want to, but don't go out of your way.

*Mindz* · 08-09-2007, 04:10 PM

it's fun though in a twisted geeky sort of way.

MerF · 08-09-2007, 05:51 PM

Quote:

Originally Posted by Dragoneye

Well, I got the 4=0100, and the 7=1000...but I can't figure out the A...

Quote:

0=0
1=1
...
...
9=9
A=10
B=11
C=12
D=13
E=14
F=15

A=10, right? A decimal 10 = 1010 in binary. Look below to see how that works out.

Quote:

nor do I have any idea how MerF got from 010010100111 to 1+2+4+32+128+1024...

To convert from binary to decimal, you add together all the values where the digit is "set" (a "1").

10111001
When the values of the digits are:

128 64 32 16 8 4 2 1

Then we add up all the values where I have a "1". SO, 128+32+16+8+1 = ???

That will be what 10111001 is worth.

Quote:

You don't have to try and teach this stuff to me, you know

...I'll learn it if you want to, but don't go out of your way.

I'm a teacher, it's what I do!

*Mr. Wyndham* · 08-09-2007, 07:26 PM

Quote:

Originally Posted by MerF

10111001
When the values of the digits are:

128 64 32 16 8 4 2 1

Then we add up all the values where I have a "1". SO, 128+32+16+8+1 = ???

That will be what 10111001 is worth.

I'm a teacher, it's what I do!

Okay, teacher,

I still don't quite get this part. How do you get 128 out of 10111001, or 64 out of 10111001?

What do you teach, btw?

08-08-2007, 10:37 PM	#17
Mindz E.B.A.H. Drives: you wild... Join Date: Mar 2007 Location: In the happy padded room wearing a jacket that makes me hug myself... Posts: 18,421	think of counting to 10. 1 2 3 4 5 6 7 8 9 then you start in the second colum with 10 this is base 10 or "decimal" now hexadecimal (hex 6, decimal 10) is base 16 1 2 3 4 5 6 7 8 9 but we can't go to 10 just yet, you have to find a way to make it to 15 before 10. The way we do it is by starting to use letters. 7 8 9 A (10) B (11) C (12) D (13) E (14) F (15) then we hit 10. 10 is basically the number when you've run out of single digits. So in Hex (base 16) 10 is the equivalent to 16 in decimal (base 10) 20 in hex is the eqvuialent of 32 in decimal. 21 = 33 25 = 37 100 in hex is a little bit tricky. You start multiplying exponentially. 16squared's place 16's place 1's place 099 = 0 x 16 squared 9 x 16 = 144 9 x 1 = 9 153 is 99 if you're writing in hex. 0FF or just FF is 255 which is the equivalent of 99 in hex as it's the max amount of numbers before hitting 100 (One Zero Zero, not one hundred). 100 is calculated as follows 1 x 256 (16 squared) 0 x 16 (16) 0 x 1 (1) therefore 100 in hex is the equivalent of 256 in decimal. I know you probably didn't care to learn, but here is the explanation the best that I can put it while working. __________________ Blue Rush, 2010 SS [Car of the Week 3/22/2010] Traded in on...ZLZBUBB, 2013 ZL1

08-08-2007, 10:51 PM	#18
Mr. Wyndham I used to be Dragoneye... Drives: 2018 ZL1 1LE Join Date: Jan 2007 Location: Buffalo, NY Posts: 31,876 View My Garage	So when you hit 19 in Hex, which is actually 25, what's the next number? Or is it 5 more letters again... __________________ *"Keep the faith."* - Fbodfather

08-08-2007, 11:10 PM	#19
Mindz E.B.A.H. Drives: you wild... Join Date: Mar 2007 Location: In the happy padded room wearing a jacket that makes me hug myself... Posts: 18,421	1A 1B 1C 1D 1E 1F 20 21 22 __________________ Blue Rush, 2010 SS [Car of the Week 3/22/2010] Traded in on...ZLZBUBB, 2013 ZL1

08-08-2007, 11:36 PM	#20
Mr. Wyndham I used to be Dragoneye... Drives: 2018 ZL1 1LE Join Date: Jan 2007 Location: Buffalo, NY Posts: 31,876 View My Garage	Ah...I see. and continuing: 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 would be the next ones? __________________ *"Keep the faith."* - Fbodfather

08-09-2007, 12:46 AM	#21
Mindz E.B.A.H. Drives: you wild... Join Date: Mar 2007 Location: In the happy padded room wearing a jacket that makes me hug myself... Posts: 18,421	hai. __________________ Blue Rush, 2010 SS [Car of the Week 3/22/2010] Traded in on...ZLZBUBB, 2013 ZL1

08-09-2007, 12:56 AM	#22
Mr. Wyndham I used to be Dragoneye... Drives: 2018 ZL1 1LE Join Date: Jan 2007 Location: Buffalo, NY Posts: 31,876 View My Garage	Awesome, I understand 1% of a complicated topic! :p __________________ *"Keep the faith."* - Fbodfather

08-09-2007, 01:45 AM	#23
Mindz E.B.A.H. Drives: you wild... Join Date: Mar 2007 Location: In the happy padded room wearing a jacket that makes me hug myself... Posts: 18,421	ok, now, work this out in decimal. 4A7 __________________ Blue Rush, 2010 SS [Car of the Week 3/22/2010] Traded in on...ZLZBUBB, 2013 ZL1

08-09-2007, 08:22 AM	#24
MerF Go Rays! Drives: 03 Trailblazer Join Date: May 2007 Location: St Pete, Florida Posts: 2,533	This is the point I have to stare at my student's keyboards. They tend to try their hardest to bust out the Microsoft calculators instead of just working it out. Little f*ers! 4=0100 A=1010 7=0111 ------------- 010010100111 (base2) = 1+2+4+32+128+1024 = 1191 (base 10) I probably pencil-fed myself somewhere, feel free to check it! Last edited by MerF; 08-09-2007 at 08:39 AM. Reason: Wirty dords.*

08-09-2007, 12:07 PM	#25
Mr. Wyndham I used to be Dragoneye... Drives: 2018 ZL1 1LE Join Date: Jan 2007 Location: Buffalo, NY Posts: 31,876 View My Garage	Well, I got the 4=0100, and the 7=1000...but I can't figure out the A, nor do I have any idea how MerF got from 010010100111 to 1+2+4+32+128+1024... You don't have to try and teach this stuff to me, you know...I'll learn it if you want to, but don't go out of your way. __________________ *"Keep the faith."* - Fbodfather

08-09-2007, 04:10 PM	#26
Mindz E.B.A.H. Drives: you wild... Join Date: Mar 2007 Location: In the happy padded room wearing a jacket that makes me hug myself... Posts: 18,421	it's fun though in a twisted geeky sort of way. __________________ Blue Rush, 2010 SS [Car of the Week 3/22/2010] Traded in on...ZLZBUBB, 2013 ZL1