Another college work help thread

[MadGamer]

Hi people, i need help on a subject which i consider to be a difficult one.

Binary

I specifically need help on the Octal number system, and how to convert into the different formats:

decimal-Octal
Octal- Binary
Binary-Octal

Could you smart people, please explain in the most simple English, cos you'll just confuse me otherwise. Oh and my chosen number for converting is 15

[superbiatch]

Check out wikipedia - thats usually my first port of call.

[Hugh]

Google is our friend

http://ascii.cl/conversion.htm

list of conversion tables

and
http://www.statman.info/conversions/octal.html

1) Decimal
Fifteen divided by ten is one, remainder 5, thus last digit is 5. One divided by ten is 0 remainder 1, thus fifteen in decimal is 15.

2) Octal

Fifteen divided by eight is 1, remainder 7. One divided by 8 is 0, remainder 1, thus fifteen in octal is 17.

3) Binary

Fifteen divided by two is 7, remainder one, so last digit is 1. Seven divided by two is 3, remainder 1, so next-to-last digit is 1. Three divided by two is 1, remainder 1, so next digit is 1. One devided by two is zero, remainder 1, so next digit is one, thus fifteen in binary is 1111.

...And for the hell of it - hexadecimal.

Fifteen divided by sixteen is zero, remainder 15, so fifteen in hexadecimal is .. wait for it... F!

[Xaccers]

click on start, then run
type calc and click ok
select view from the drop down menu, and then scientific.
This will give you the Hex Dec Oct Bin options.
Select the one you want to convert from, say Dec and type in the number 15.
To convert it to Oct, just select Oct and it will magically turn into 17.
And people knock microsoft

[MadGamer]

See i knew a handful would know it. What about the placeholders for each though JohnHorb? How do they work? i.e. what do they go up in?

Originally Posted by MadGamer

See i knew a handful would know it. What about the placeholders for each though JohnHorb? How do they work? i.e. what do they go up in?

Not sure what you mean by 'placeholders', but if it helps:-

Binary counting up to 16:-
1
10
11
100
101
110
111
1000
1001
1010
1011
1100
1101
1110
1111
10000

Octal:-

1
2
3
4
5
6
7
10
11
12
13
14
15
16
17
20

Hexadecimal:-

1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
10

Decimal:-

I'm sure you can work that out!

[MadGamer]

Thanks

[spiderplant]

I too wasn't familiar with the term 'placeholders' but a quick Google turned up this, which I think explains all pretty well:

http://wally.cs.iupui.edu/n241-new/t...NumSystems.ppt

I don't think I've used octal for about 20 years. (Or should that be 24?) Hex is very useful though.

I think JohnHorb's approach is best, Wayne needs to understand how to 'do it himself', rather than look it up or use a calculator.

Wayne, the place holder goes up by the number base raised to the appropriate power

so binary

units
2 to the power 1 (2)
2 to the power 2 (4)
2 to the power 3 (8)
2 to the power 4 (16)
2 to the power 5 (32)
2 to the power 6 (64)
2 to the power 7 (128)

decimal
units
10 to the power 1 (10)
10 to the power 2 (100)
10 to the power 3 (1000)
10 to the power 4 (10000)
10 to the power 5 (100000)

etc

and Octal

units
8 to the power 1 (8)
8 to the power 2 (64)
8 to the power 3 (512)
8 to the power 4 (4096)
8 to the power 5 (32768)
etc

[MadGamer]

Originally Posted by homealone

I think JohnHorb's approach is best, Wayne needs to understand how to 'do it himself', rather than look it up or use a calculator.

Wayne, the place holder goes up by the number base raised to the appropriate power

so binary

units
2 to the power 1 (2)
2 to the power 2 (4)
2 to the power 3 (8)
2 to the power 4 (16)
2 to the power 5 (32)
2 to the power 6 (64)
2 to the power 7 (128)

decimal
units
10 to the power 1 (10)
10 to the power 2 (100)
10 to the power 3 (1000)
10 to the power 4 (10000)
10 to the power 5 (100000)

etc

and Octal

units
8 to the power 1 (8)
8 to the power 2 (64)
8 to the power 3 (512)
8 to the power 4 (4096)
8 to the power 5 (32768)
etc

Thanks for that Gaz

[greencreeper]

Ah - takes me back. Something you need to learn but will never use. Wait until you get onto minus numbers. Or adding/subtracting/division/multiplication. Especially if you have to do it the "computer way" - i.e. just add/shift/compare

[MadGamer]

Help, ive looked online and cant find a step by step guide. Using Frontpage 2003 now as apposed to Notepad and need to add a contact form. Can someone kindly walk me through the manual way of doing it via the insert >>> Form method? I know there's a template but i need the form to appear on the same page and not seperate.

[Paul]

http://www.toolsandtemplates.com/adv...rmbuilding.htm
http://office.microsoft.com/en-us/fr...CH063547581033

[MadGamer]

Ahh cheers Paul, i didnt realize you could copy the code for a form into an exisiting webpage.