What is the difference between primary and secondary storage?

Answer

Primary memory is the internal working memory of a computer, and it includes RAM and the cache. Secondary storage is also called external memory, and it includes the computer’s hard drive.

Primary storage is the fastest memory in the computer, but it only holds information for a short period of time while the computer is running. The data from primary storage tends to go away after the computer is turned off. When a user activates a program on a computer, data is moved from secondary storage devices into the RAM and cache of primary storage in order for the computer to actually use it. Secondary storage includes a CD-RW, a USB thumb drive, a tape drive, a floppy disk or anything else that is not used for the computer’s main memory. Anything stored in primary memory that needs to be remembered in the long run is transferred back to secondary memory when it is saved. Basically, it goes from the computer’s RAM and other places to the hard drive. The computer needs to access the information quickly to run it right away, which is the purpose of primary storage and the reason it is the fastest moving of the two storage types.

Q&A Related to "What is the difference between primary and secondary..."
Primary storages are volatile. An Example of primary storage : RAM. whereas, Secondary storages are permanent. An Example of secondary storage : ROM.
http://wiki.answers.com/Q/What_is_difference_betwe...
Random access memory (RAM) is the main form of primary storage. The computer processor uses this RAM to hold code, perform computations and manage the operation of the machine because
http://www.ehow.com/facts_6928066_primary-storage-...
Primary storage (or main memory or internal memory)
http://www.chacha.com/question/what-is-1-differenc...
dear , primary devices like Ram,Rom and the secondary devices like hard disk etc.
http://answers.yahoo.com/question/index?qid=201002...
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