1. Hexadecimal Data Representation

2. Objectives  Know how the Hexadecimal counting system works  Be able to convert between denary, binary & hexadecimal counting systems

3. What is hexadecimal?  Its short hand binary  It makes binary easier to remember  It represents 4 bits – what’s 4 bits called?

4. Binary Vs Hex  Unlike Binary, Hex is base 16  This means that there are 16 different values available.  It also uses letters to represent numbers Denary 0 1 2 3 4 5 6 7 8 9 Binary 0 1 Hex 0 1 2 3 4 5 6 7 8 9 A B C D E F

5. Converting to Hex from Decimal 94 01011110 5 14 5 E Split the 8 bits into 2 nibbles Convert to binary Convert each nibble into decimal Hex 0 = 0 1 = 1 2 = 2 3 = 3 4 = 4 5 = 5 6 = 6 7 = 7 8 = 8 9 = 9 A = 10 B = 11 C = 12 D = 13 E = 14 F = 15 Convert the decimal using the Hex conversion (in the box) 1 2 3 4 Start with a Decimal Number 5