Binary, Hexadecimal, octal and all that shizzle

Bit

1 is the base for everything

Nibble

4 bits in a nibble

Byte

8 bits go into a byte

Denary

Base 10

Hexadecimal

Base 16, after 9 it goes into using letters as numbers, A=10 B=11 ect

Octal

Base 8

From Binary to Octal

Converted from binary by splitting up the binary number into groups of 3 from the right. You then work out these 3 digit binary numbers to tell you what the Base 8 amount is.

From Binary to Hexadecimal

Converted from binary by splitting up the binary number into groups of 4. You then work out the 2 nibbles and it will tell you what the hexadecimal value is.

Binary Coded Decimal

Each individual number is take and converted into a 4 bit binary number which gives you what is would be. For example 13 would be the same as 0001 0011

Binary

Made up of 0's and 1's which is in base 2

Twos Compliment

The way the computer subtracts numbers is via this process, it makes the 128 bit into (-)128 so you will have one number (-) and one (+) meaning when you add them together it would give you a smaller answer in the end. When you (-) 128 you have to make the number you want from (-)128 not from 0

Size and Magnitude

This is where you take the 128 bit and remove it altogether and replace it with a (+)(-), this means that when subtract numbers you will get the wrong answer, this is why computers don't use this method when subtracting