Unit 1 The Development of Computer Technology Unit 2 Introduction to Computer Systems Unit 3 Description of the Oraig Systems Unit 4 Introduction to Computer Programming Unit 5 Database Fundamentals Unit 6 Your Old Friend Microsoft Office Unit 7 Computer Network Unit 8 What Is the Internet Unit 9 Introduction to Web Development Unit 10 E-commerce Unit 11 Multimedia on the Web Unit 12 The Difference between a Computer Virus, Worm and Trojan Horse