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Getting Started

Welcome: Why Understanding Computers Matters

Defining a Computer and Its Four Functions

Hardware and Software: The Two Halves

Quick Check: The Basics

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Define what a computer is, trace the input-process-output-storage cycle, and see how hardware and software work together.

Start at the very beginning: what makes a device a computer, the four-step cycle every computer follows, and how its two halves — hardware and software — depend on each other.

What Is a Computer?

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