Bit * binary digit (0, 1) * smallest increment of data Byte * 4 bits = nibble * 8 bits = byte * used to represent data Bits ordered by significance, left to right: $ 2^7\quad2^6\quad2^5\quad2^4\quad2^3\quad2^2\quad2^1\quad2^0 $ First term has largest magnitude ### Decimal to Binary | Divide | Number | Remainder | | ------ | ------ | --------- | | 2 | 137 | 1 | | 2 | 68 | 0 | | 2 | 34 | 0 | | 2 | 17 | 1 | | 2 | 8 | 0 | | 2 | 4 | 0 | | 2 | 2 | 0 | | | 1 | 1 | 137 = 0b1000 1001 ### Hexadecimal Base 16: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F #### Hexadecimal to Binary 0xDEADBEEF 0b1100 1101 1010 1100 1011 1110 1110 1111 #### Hexadecimal to Decimal 0xDEADBEEF $ 16^7\quad16^6\quad16^5\quad16^4\quad16^3\quad16^2\quad16^1\quad16^0 $