This book has been exclusively designed for the course on Information Technology offered to the first year undergraduate engineering students of the Uttar Pradesh Technical University (UPTU). It has been updated with the solutions to 2005-2006 and 2006-2007 session question papers. Table of contents Chapter 1. Information Technology Basics Chapter 2. Information Encoding Chapter 3. Data Compression Chapter 4. Introduction to Computers Chapter 5. The Processor Chapter 6. Computer Memory and Storage Chapter 7. The Input-Output Media Chapter 8. Algorithms and Flow Charts Chapter 9. Programming Languages and Software Methodology Chapter 10. Digital Fundamentals Chapter 11. Computer Networks and Data Communications-Part-I Chapter 12. Computer Networks and Data Communications-Part-II Chapter 13. Introduction to the Internet Chapter 14. Concepts in Electronic Commerce Chapter 15. Web Technologies, Part-I (Object Technology, Java, and Component Technology) Chapter 16. Web Technologies-Part-II (Dynamic Web Pages with ASP/JSP, Active Web Pages with Applets) Chapter 17. Web Technologies-Part-III (XML, EJB, WAP) Chapter 18. An Introduction to Operating Systems Chapter 19. Introduction to MS-Office and MS-Office Applications Chapter 20. Information Technology Applications in India Appendix Solved Question Papers Index.