Chapter 1 provides learners with a fundamental understanding of Computer Aided Drawing (CAD) and establishes the conceptual foundation required before using AutoCAD. This chapter introduces the role of CAD in modern engineering and explains how digital drafting has replaced traditional manual drawing methods across industries.

Learners will explore what CAD technology is, why it is used, and how it transforms the workflow of designers, technicians, and engineers. The chapter highlights the evolution of drafting tools—from drawing boards, T-squares, and manual pencils to the precision and flexibility of computer-based design systems. By understanding this transition, learners will appreciate the importance of accuracy, speed, and standardization in creating professional technical drawings.

Additionally, this chapter introduces the AutoCAD software environment, giving learners a big-picture view of its capabilities and applications. Key concepts such as the command line, coordinates, drawing units, and workspace layout will be briefly presented to prepare learners for deeper hands-on lessons in the following chapters.

By the end of Chapter 1, learners will be able to:

• Explain the definition and purpose of CAD.

• Identify the benefits of using CAD compared to manual drafting.

• Recognize the industries and disciplines that rely on CAD technology.

• Understand AutoCAD as a leading CAD software used globally.

• Describe the basic components of the AutoCAD interface at an introductory level.

Overall, Chapter 1 builds the foundational understanding necessary to effectively begin digital drafting and ensures that learners are well prepared for the practical skills covered in later modules.