By Jean Andrews
Written via best-selling workstation fix writer and educator Jean Andrews, the 5th version of A+ consultant to undefined: handling, protecting, and Troubleshooting maps totally to CompTIA's 2009 A+ examination pursuits. This full-color advisor is the main entire, step by step e-book on hand for studying the basics of helping and troubleshooting machine undefined. while, it prepares readers to effectively cross the A+ 220-701 and 220-702 checks. the recent version is formatted to help any educating or studying kind and direction layout, that includes an essentials-to-practical association inside each one bankruptcy and inclusion of tabs distinguishing examination content material. additional content material and dwell demonstrations with Jean Andrews can be found at the accompanying CD, making this re-creation a complete resolution for upkeep and service.
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Additional resources for A+ Guide to Hardware: Managing, Maintaining and Troubleshooting 5th Edition
SSD drives are used in industries that require extreme durability, such as the military, and are making their way into the retail markets as the prices go lower. org). The two major ATA standards for a drive interface are serial ATA (SATA), the newer and faster 14 CHAPTER 1 Introducing Hardware Figure 1-16 Four SSD drives Courtesy: Course Technology/Cengage Learning standard, and parallel ATA (PATA), the older and slower standard. Hard drives, CD drives, DVD drives, Zip drives, and tape drives, among other devices, can use these interfaces.
When using a multimeter to measure electricity, be careful not to touch a chip with the probes. When changing DIP switches, don’t use a graphite pencil, because graphite conducts electricity; a very small screwdriver works very well. After you unpack a new device or software that has been wrapped in cellophane, remove the cellophane from the work area quickly. Don’t allow anyone who is not properly grounded to touch components. Do not store expansion cards within one foot of a monitor, because the monitor can discharge as much as 29,000 volts of ESD onto the screen.
The table is temporary storage, a place for you to keep data and instructions as you work with them. The notepad is your output from all that work, and you are the CPU, doing the work of reading the books and writing down information. You kept a book on the table until you knew you were finished with it. As you worked, it would not make sense to go back and forth with a book, returning and retrieving it to and from the stacks. Similarly, the CPU uses primary storage, or memory, to temporarily hold data and instructions as long as it needs them for processing.
A+ Guide to Hardware: Managing, Maintaining and Troubleshooting 5th Edition by Jean Andrews