By Jean Andrews
Written via best-selling workstation fix writer and educator Jean Andrews, the 5th variation of A+ consultant to undefined: handling, holding, and Troubleshooting maps totally to CompTIA's 2009 A+ examination goals. This full-color advisor is the main entire, step by step publication to be had for studying the basics of helping and troubleshooting laptop undefined. while, it prepares readers to effectively cross the A+ 220-701 and 220-702 assessments. the recent variation is formatted to aid any educating or studying sort and direction layout, that includes an essentials-to-practical association inside every one bankruptcy and inclusion of tabs distinguishing examination content material. extra content material and reside demonstrations with Jean Andrews can be found at the accompanying CD, making this re-creation a complete answer for upkeep and service.
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Extra resources for A+ Guide to Hardware: Managing, Maintaining and Troubleshooting 5th Edition
However, when data and instructions are not being used, they must be kept in permanent storage, sometimes called secondary storage, such as a hard drive, CD, DVD, or USB drive. Primary storage is much faster to access than permanent storage. Figure 1-12 shows an analogy to help you understand the concept of primary and secondary storage. In our analogy, suppose you must do some research at the library. You go to the stacks, pull out several books, carry them over to a study table, and sit down with your notepad Secondary storage Output CPU Data Instructions Memory (temporary storage) Figure 1-12 Memory is a temporary place to hold instructions and data while the CPU processes both Courtesy: Course Technology/Cengage Learning PC Hardware Components 11 and pencil to take notes and do some calculations.
These are built around microprocessors manufactured by Intel Corporation and AMD. , was formerly built around a family of microprocessors, the PowerPC microprocessors, built by Motorola and IBM. Currently, Apple computers are built using Intel processors. You will learn more about processors in Chapter 4. 10 CHAPTER 1 Introducing Hardware CPU fan Motherboard Heat sink Figure 1-11 The processor is hidden underneath the fan and the heat sink, which keep it cool Courtesy: Course Technology/Cengage Learning STORAGE DEVICES In Figure 1-1, you saw two kinds of storage: temporary and permanent.
PROTECT YOURSELF, YOUR HARDWARE, AND YOUR SOFTWARE When you work on a computer, it is possible to harm both the computer and yourself. The most common accident that happens when attempting to fix a computer problem is erasing software or data. Experimenting without knowing what you are doing can cause damage. To prevent these sorts of accidents, as well as the physically dangerous ones, take a few safety precautions. The text below describes the potential sources of damage and danger and how to protect against them.
A+ Guide to Hardware: Managing, Maintaining and Troubleshooting 5th Edition by Jean Andrews
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