By Jean Andrews
Written via best-selling laptop fix writer and educator Jean Andrews, the 5th version of A+ consultant to undefined: dealing with, keeping, and Troubleshooting maps totally to CompTIA's 2009 A+ examination targets. This full-color advisor is the main entire, step by step e-book on hand for studying the basics of assisting and troubleshooting machine undefined. whilst, it prepares readers to effectively cross the A+ 220-701 and 220-702 checks. the recent variation is formatted to aid any educating or studying kind and path structure, that includes an essentials-to-practical association inside each 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 resolution for upkeep and service.
Read Online or Download A+ Guide to Hardware: Managing, Maintaining and Troubleshooting 5th Edition PDF
Best comptia books
Guard I. T. : safeguard by way of instance attracts on distinct battle tales to spot what used to be performed correct and what used to be performed flawed in genuine computer-security assaults, providing you with the chance to profit from actual stories. techniques to securing structures and networks range greatly from to and association to association.
This ebook will take readers from the invention of vulnerabilities and the production of the corresponding exploits, via a whole defense evaluate, throughout deploying patches opposed to those vulnerabilities to guard their networks. This ebook is exclusive in that it information either the administration and technical ability and instruments required to improve a good vulnerability administration method.
The e-book is aimed toward researchers and executive coverage makers who desire to maintain abreast of the latest advancements in pollution modelling and air caliber concerns. The booklet emphasizes the next key themes: 1. neighborhood and concrete scale modelling; 2. local and intercontinental modelling; three. info assimilation and air caliber forecast; four.
- Network Security Technologies and Solutions (CCIE Professional Development Series)
- Computational intelligence in information assurance and security
- Microsoft Encyclopedia of Security
- Nmap Network Scanning: The Official Nmap Project Guide to Network Discovery and Security Scanning
Extra info for A+ Guide to Hardware: Managing, Maintaining and Troubleshooting 5th Edition
In this chapter, we introduce the hardware components of a computer system and how they work. Processing Output CPU Core i7 Input Keyboard Temporary storage RAM Floppy disk Mouse Monitor Hard drive Permanent storage Printer Figure 1-1 Computer activity consists of input, processing, storage, and output Courtesy: Course Technology/Cengage Learning A computer user must interact with a computer in a way that both the user and the software understand, such as with entries made by way of a keyboard or a mouse (see Figure 1-2).
Here are the components used primarily for processing: Processor or CPU (central processing unit), the computer’s most important chip Chipset that supports the processor by controlling many motherboard activities The component used for temporary storage is: RAM (random access memory), which holds data and instructions as they are processed Components that allow the processor to communicate with other devices are as follows: Traces, or wires, on the motherboard used for communication Expansion slots to connect expansion cards to the motherboard The system clock that keeps communication in sync Connections for data cables to devices inside the case Ports for devices outside the case PC Hardware Components 9 1 The electrical system consists of: Power supply connections that provide electricity to the motherboard and expansion cards Every motherboard has programming and setup data stored on it: Flash ROM, a memory chip used to permanently store instructions that control basic hardware functions (explained in more detail later in the chapter) CMOS RAM and CMOS setup chip that holds configuration data Figure 1-10 shows the ports coming directly off a motherboard to the outside of the case: a keyboard port, a mouse port, a parallel port, two S/PDIF sound ports (for optical or coaxial cable), a FireWire port, a network port, four USB ports, six sound ports, and a wireless network antenna port.
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. Figure 1-17 shows an internal SATA drive interface. SATA cables are flat and thin; one end connects to the device and the other end to the motherboard connector.
A+ Guide to Hardware: Managing, Maintaining and Troubleshooting 5th Edition by Jean Andrews