Unit 1 Materials and Properties 2 Unit 2 Technical Drawing and Machine Tools 18 Unit 3 Electricity and Power 34 Unit 4 Electric Circuits 48 Unit 5 Electronics 56 Unit 6 Telecommunications and Networks 66 Unit 7 Computer:History and Technology 78 Unit 8 Automation and Robotics 92 Unit 9 Engines 102 Unit 10 Maintenance and Safety 116