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logic unit completes four types of simple calculations, according to The University of Rhode Island: subtraction, addition, multip lication and division. These options are converted into different options or comparison calculations, such as greater than, less t han and the same as. The information from these calculations is held in storage registers within the CPU before being sent to othe r memory components, while the address registers hold information on the storage of pieces of information within the computers mem 3d models download ory.Secondary Hard Drive A secondary hard drive can be installed internally or externally in most computers. The computer recogniz es the drive as an additional storage device and by default assigns it the first unassigned drive letter for identification purpos Bio Limousin Moteur de recherche es. Internal drives can be installed using standard IDE connections or serial ATA connections if the motherboard supports SATA. Ex .

t easier to organize certain types of data; programs and system files can be placed on the primary drive while music, documents, p ictures and other media files can be placed on the secondary drive. When installed, the actual capacity of each drive will be slig htly smaller than the advertised capacity due to formatting. Data Protection Using two hard drives protects data by creating a phy sical barrier against data loss in the event of hard drive failure. A secondary hard drive can be used to store backups of operati Omni Diet ng system data, important documents and other files that would be difficult to replace in the event of a hard drive crash. Users c an set up automatic data backups in their operating systems or can copy important files to the secondary hard drive manually. Dual Bio Limousin Moteur de recherche -Boot Systems If a computer has two operating systems installed, two hard drives allows the user to give each OS a dedicated drive .

en it is booted up. Partitioning Some computer users with large capacity hard drives choose to partition their drives instead of p urchasing a second hard drive. Each partition is recognized as a separate hard drive by the computers operating system even though the partitions share the same physical drive. A single drive can support multiple partitions, with each partition serving a diffe rent purpose such as storing specific file types or acting as the default save location for different operating systems on a multi 3d models download -boot computer configuration. Laptop Hard Drives Some models of laptop computers allow a second internal hard drive to be installe d or come equipped with two hard drives. Internal laptop hard drives may connect with IDE or SATA connections depending on the mod Bio Limousin Moteur de recherche el of the laptop, and may come in one of several size configurations. External hard drives that connect via USB can be used with l .

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