1. OBJECTIVES 1. Be able to recognise binary code 2. Be able to convert denary numbers into binary numbers 3. Be able to convert binary into denary numbers

2. A Computer is ran by a CPU (Central processing unit), it’s kind of like the computer’s brain. The CPU has lots of little switches in it that can either be ON (a 1) or OFF (a 0)

5. Denary (our numbers) Binary 00 11 210 311 4100 5101 6110 7111 81000 91001 101010 111011 121100

6. To make the number 5, place a 1 under the numbers that you need and a 0 under the numbers that you don’t… 1286432168421 1286432168421 00000101 Denary numbers – keep doubling! This is Binary

7. 1286432168421 00000101 101

10. 1286432168421 01000010 1286432168421 00100101 1286432168421 10000001 a) b) c) 64 + 2 = 66 32 + 4 + 1 = 37 128 + 1 = 129

11. a) 00011000 b) 00000101 c) 00010110 d) 01101011 e) 01111000 f) 10100100 g) 10100101 h) 10111100 i) 11010111 j) 11100110 k) 11111010

12. 24 00011000 5 00000101 22 00010110 107 01101011 120 01111000 164 10100100 165 10100101 188 10111100 215 11010111 230 11100110 250 11111010

14. “There are 10 kinds of people in the world, those who understand binary and those who don’t” Explain this joke…

15. Why not try a cool game?