CD:ROM drives are the thing of the future. CD:ROMs are used in almost every computer around the world. CD:ROM stands for COMPACT DISK READ ONLY MEMORY. That means that you can only read information off the disk. Three and a half disks are disks that you can read and wriye infromation from. Five and a quarter can do the same thing , but do not hold as much information. Five and a quarter disketts are very old. they stopped making those a while ago. In the ninteen ninty's they are totally outdated becaus of the lack of space they have and the lack of speed. A CD:ROM can hold more information than both of them put together. CD:ROMs hold up to four hundred megabytes of information. That is about half of what an average hard drive holds up to today. A hard drive is what all the information you install in to your computer goes. Inside....

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