Write a note on different types of RAM.

SRAM (Static RAM):
•It retains the content as long as the power is applied to the chip.

•If the power is turned off then its contents will be lost forever.

DRAM (Dynamic RAM):
•DRAM has extremely short Data lifetime (usually less than a quarter of second). This is true even when power is applied constantly.

•A DRAM controller is used to make DRAM behave more like SRAM.

•The DRAM controller periodically refreshes the data stored in the DRAM.

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