Dynamic random access memory

DRAM is a type of random access memory that stores each bit of data in a separate capacitor.

Related Topics:
Random access memory - Bit - Capacitor

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The number of electrons stored in the capacitor determines whether the bit is considered 1 or 0.

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As the capacitor leaks electrons, the information gets lost eventually, unless the charge is refreshed periodically. Because it must be refreshed periodically, it is a dynamic memory as opposed to SRAM and other static memory.

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Also, since DRAM loses its data when the power supply is removed, it is in the class of volatile memory devices.

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DRAM is also in the class of solid-state memory.

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