By David Groth
This is the ebook you want to organize for CompTIA's A+ examination. the main up to date content material had to go the A+ middle examination and the newest insurance of reminiscence, bus, peripherals, and instant applied sciences for the working structures examination. This examine consultant offers: * complete assurance of each examination aim * functional info on community undefined * thousands of tough perform questions, within the publication and at the CD * modern examination training software program, together with a checking out engine and digital flashcards Authoritative insurance of all examination pursuits, together with: center undefined * install, configuration, and upgrading * Diagnosing and troubleshooting * Preventive upkeep * Motherboards, processors, and reminiscence * Printers * uncomplicated networking working approach applied sciences * OS basics * set up, configuration, and upgrading * Diagnosing and troubleshooting * Networks
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Additional info for A+ Complete Study Guide, Third Edition (220-301 and 220-302)
Most motherboards produced today include both the floppy disk and hard disk interfaces on the motherboard. The differences and compatibility between the different types of hard disk interfaces will be covered in Chapter 2. , 1151 Marina Village Parkway, Alameda, CA 94501. com 26 Chapter 1 PC Architecture Keyboard Connectors The most important input device for a PC is the keyboard. 25) that allows a keyboard to be connected directly to the motherboard through the case. There are two main types of keyboard connectors: AT and PS/2.
We’ll talk more about motherboard designs in a later chapter. For now, just remember that in addition to their type, cases must also be designed for the motherboard type. You could have two cases with the same physical dimensions and look, but with completely different internal layouts suitable for their motherboards. Case styles vary in the way they normally sit (vertically or horizontally) as well as the number of device bays they support. A device bay (or bay for short) is a large slot into which an expansion device fits (usually a disk drive of some sort).
Prior to 1981, chips were found in a rectangle with two rows of 20 pins known as a Dual Inline Package (DIP). 36. There are still integrated circuits that use the DIP form factor. However, the DIP form factor is no longer used for PC CPUs. Most CPUs use either the PGA or the Single Edge Contact Card (SECC) form factor. SECC is essentially a PGA-type socket on a special expansion card. 21). Or, if the CPU is installed in a Slot 1 motherboard, it is a large 1/2-inch thick expansion card with a large heatsink and fan integrated into the package.