APC Information Technology Code 402 for Class 9 is a comprehensive textbook designed to build foundational knowledge in IT concepts and practical skills. This book covers essential topics including computer fundamentals, networking basics, cybersecurity awareness, and digital literacy aligned with the CBSE curriculum. Ideal for students preparing for board exams and competitive assessments, this guide combines theory with real-world applications. Clear explanations, worked examples, and practice questions help reinforce learning and boost confidence. Perfect for classroom use or self-study, it serves as a reliable reference for understanding modern information technology principles.