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How does processor and memory card works in a personal computer?


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December 29, 2014 11:05AM

A processor is a chip that is designed to process instructions given to it. It does have onboard memory, but it's not enough to store a large amount of data as it's for temporarily storing information that it will be processing almost immediately (also known as a cache). The user will NOT have access to this form of memory at all.

There are two forms of memory that you will see in personal computers: RAM and permanent storage. RAM is short for random access memory. It also works as a cache, but is capable of storing larger amounts compared to the several megabytes a processor has. It stores temporary-use information (and it will stay there until overwritten or if the computer turns off) for the processor to retrieve in the case if it doesn't have it within its onboard caches. Again, the average user will not be able to access this type of memory without special knowledge.

"Permanent" storage will stay around even if you turn off the computer. The only way to get rid of the information is to erase it (overwrite) it. Compared to the other two forms of memory, this will usually be one of the slowest forms of memory, but it will have lots more space compared to the first two.