why RAM and not the harddisk

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patel_ec

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hello

i have a basic question.

tell me why we are using a RAM in computers.

i mean why processor cant directly deal with harddisk?

if we want processor to deal with harddisk, what r the problems and how solution tends to use RAM?
 

Access time of RAM is very very low as compared to HARDDISK Media
and again RAM is mapped in processor address space to exec. program from RAM
 

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