Dynamic RAM or DRAM

Dynamic RAM is a form of volatile memory.

It uses the charge of a capacitor to store one bit of data.

DRAM is relatively cheap but unfortunately capacitors leak away their charge and so they need to be topped up every few milliseconds with a refresh signal, hence the word 'dynamic' to reflect this constant need to be refreshed.

DRAM is the most popular technology for main memory. Its counterpart is SRAM or Static RAM

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Click on this link: Explain DRAM


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