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CompTIA® A+® Training Kit (Exam 220-801 and Exam 220-802) by Darril Gibson

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Chapter 1. Introduction to Computers

In this chapter, you’ll learn about some basic computer-related concepts that are important for any technician to understand. For example, different numbering systems are often unfamiliar to many people, but don’t underestimate their importance in understanding how a computer works. The Numbering Systems section lays the foundation for topics in many future chapters. This chapter also includes information about cases, fans, and power supplies—core hardware computer components that often require periodic maintenance by technicians. Last, you’ll learn about some basic safety issues and tools you can use when maintaining computers.

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