A+ Complete Study Guide, Third Edition (220-301 and 220-302) by David Groth

By David Groth

Here is the booklet you must organize for CompTIA's A+ examination. the main up to date content material had to move the A+ center examination and the newest assurance of reminiscence, bus, peripherals, and instant applied sciences for the working platforms examination. This research consultant presents: * complete insurance of each examination aim * sensible details on community undefined * 1000s of hard perform questions, within the e-book and at the CD * modern examination guidance software program, together with a checking out engine and digital flashcards Authoritative insurance of all examination ambitions, together with: middle undefined * set up, configuration, and upgrading * Diagnosing and troubleshooting * Preventive upkeep * Motherboards, processors, and reminiscence * Printers * easy networking working approach applied sciences * OS basics * deploy, configuration, and upgrading * Diagnosing and troubleshooting * Networks

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Dynamic RAM chips are cheaper to manufacture than other types because they are less complex. Dynamic refers to the memory chips’ need for a constant update signal (also called a refresh signal) in order to keep the information that is written there. If this signal is not received every so often, the information will cease to exist. SRAM The S in SRAM stands for static. Static random access memory doesn’t require a refresh signal like DRAM. The chips are more complex and are thus more expensive.

34 shows peripheral ports connected to a motherboard with the direct solder method. Notice that there is no cable between the port and the motherboard and that the port is part of the motherboard. As discussed earlier, these onboard ports can be disabled in the BIOS setup if necessary. , 1151 Marina Village Parkway, Alameda, CA 94501. 34 PC Architecture Peripheral ports directly soldered to a motherboard BIOS Chip Aside from the processor, the most important chip on the motherboard is the basic input/output system (BIOS) chip.

Similarly, a 75MHz Pentium computer might be labeled Whizbang 575. Another way to determine a computer’s CPU is to save your work, exit any open programs, and restart the computer. Watch closely as the computer returns to its normal state. You should see a notation that tells you what chip you are using. If you are using MS-DOS, you can also run Microsoft Diagnostics to view the processor type (that is, unless your computer has a Pentium, in which case it will report a very fast 486). ” Today, memory is one of the most popular, easy, and inexpensive ways to upgrade a computer.

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