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When trying to purchase or research a computer, you may see a lot of unfamiliar terms. One of these may have been something like "80GB Ultra DMA." That may not make a lot of sense to somebody who hasn't spent a lot of time caring about the insides of a computer, but it isn't that complicated to learn and is relevant information for those seeking to understand what goes on in their PC.
What It Is
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The 80 gigabyte Ultra DMA drive is a type of hard drive for a computer. It is this device that permanently stores all of the programs, videos, music, images, documents and various other types of files you will create and save during the use of your computer or device. Your computer will access this in order to summon these files.
What 80GB Means
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The "80GB" section of the device name refers to the amount of storage available, in this case 80 gigabytes. One gigabyte is 1024 megabytes. An average Word document is 100 kilobytes while an average song is around 5MB. This means that an 80GB drive can store about 830,000 documents or 16,000 songs.
What Ultra DMA Means
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Ultra DMA refers to the type of interface used by the hard drive to communicate with the computer. "DMA" stands for "direct memory access." It is more advanced than the ATA, or advanced technology attachment, interface used in older hard drives and can transfer your files at a rate of 33.3 megabytes per second, double the rate of the older ATA drives.
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