Thursday, September 4, 2008
Week 2 Muddiest Point
Okay. I just need to clarify. On the hard drive of a computer there are cylinders of information composed of spinning plates that are magnetic and 2-sided. On these plates are concentric circles of information called tracks which are broken up into sectors. The Address of the information is made up of the following: platter, track, sector. Because of this the access is random. Here's the question: On a CD is the information random access? The information is stored on a single track and even though it's broken up into sections, does the laser have to run through all of the sections until it finds the right one, making it sequential, or does it use an address, making it random?
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It is still a random access since the address (the sector) provide the capability to go to the right sector quickly. This is different to the case of a tape where there is no specific address for quick access
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