By Jean Andrews
This finished certification resolution not just offers thorough practise for CompTIA's newest A+ certification tests but additionally will give you real-worldinstruction on every thing you must understand to aid and troubleshoot computing device and software program. up-to-date to incorporate the most up-tp-date applied sciences, with a brand new bankruptcy on securing your notebook and small community, CompTIA A+ 2006 In Depthtakes you from the "just-a-user" point to the "I-can-fix-this" point on all computing device and software program issues. insurance is balanced. whereas targeting new and software program, the textual content additionally covers the true paintings of workstation fix, the place a few older expertise is still in frequent use and nonetheless wishes help. It additionally covers all working systems-every home windows OS, in addition to Linux and Mac OS. the entire content material that pertains to CompTIA's A+ necessities, 220-602, 220-603, and 220-604 certification checks is highlighted with an A+ icon that denotes the examination identify and the target quantity that the content material refers to. This special function highlights the appropriate content material at a look for you to pay additional realization to this fabric, however it additionally is helping positioned examination info into context. extra callouts offer necessary test-taking tricks and easy methods to keep in mind for examination day. With finished assurance of all and software program themes, CompTIA A+ 2006 intensive is a textual content you may be certain to confer with many times, lengthy after you have handed the examination.
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If another drive were connected to the middle of the cable, it would be drive B in a computer system. Electricity to a ﬂoppy drive is provided by a power cord from the power supply that connects to a power port at the back of the drive. Floppy drives are not as necessary as they once were because the industry is moving toward storage media that can hold more data, such as CDs, DVDs, and ﬂash drives. For years, every PC and notebook computer had a ﬂoppy drive, but many newer notebook computers don’t, and manufacturers often offer ﬂoppy drives on desktop systems as add-on options only.
This type of memory is nonvolatile and is called ROM (read-only memory). You will see examples of ROM chips later in the chapter and examples of RAM modules in Chapter 7. Using Windows XP, you can see what type of CPU you have and how much memory you have installed. Click Start, right-click My Computer, and then select Properties on the shortcut menu. 1 General tab (see Figure 1-15). You can also see which version of Windows you are using. Using Windows 9x or Windows 2000, right-click the My Computer icon on your desktop, select Properties on the shortcut menu, and click the General tab.
A FireWire port (also called a 1394 port) is used for high-speed multimedia devices such as digital camcorders. A universal serial bus (USB) port can be used by many different input/output devices, such as keyboards, printers, scanners, and digital cameras. 1 Network port Six sound ports Parallel port Wireless LAN antenna port S/PDIF port (for coaxial cable) Keyboard port Four USB ports Mouse port S/PDIF port (for optical cable) Figure 1-10 A motherboard provides ports for common I/O devices In addition to these ports, some older motherboards provide a serial port that transmits data serially (one bit follows the next); it is often used for an external modem or a serial mouse (a mouse that uses a serial port).