6Chapter 1The Big Picturecore electronic circuitry gives rise to specialized hardware componentssuch as the computer’s Central Processing Unit (CPU) and memory. Chap-ters 4 and 5 of the book discuss these topics in detail.The programming layer deals with software, the instructions used toaccomplish computations and manage data. Programs can take manyforms, be performed at many levels, and be implemented in manylanguages. Yet despite the variety of programming issues, the goal remainsthe same: to solve problems. Chapters 6 through 9 explore many issuesrelated to programming and the management of data.Every computer has an Operating System (OS) to help manage thecomputer’s resources. Operating systems, such as Windows 2000, Linux,or the Mac OS, help us interact with the computer system and manage theway hardware devices, programs, and data interact. Knowing what anoperating system does for us is key to understanding the computer ingeneral. These issues are discussed in Chapters 10 and 11.
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Central processing unit, big picture, core electronic circuitry