Question: Modern computers integrate several different types of memory, such as cache, RAM, hard disk, and floppy disk. Why are different types of memory used, as

Modern computers integrate several different types of memory, such as cache, RAM, hard disk, and floppy disk. Why are different types of memory used, as opposed to the exclusive use of a particular technology? What would be the drawbacks, for example, of using only cache memory, or only hard disk?

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