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Dram
Dram or DRAM may refer to:

Technology and engineering
  • Dram (unit), a unit of mass and volume, as such, an informal name for a small amount of liquor, especially Scotch whisky and Irish Whiskey.
  • Dynamic random-access memory, a type of electronic semiconductor memory
  • Minecart or dram, a small railway cargo truck used in a mine railway

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Dynamic random-access memory
Dynamic random-access memory (DRAM) is a type of random-access memory that stores each bit of data in a separate capacitor within an integrated circuit. The capacitor can be either charged or discharged; these two states are taken to represent the two values of a bit, conventionally called 0 and 1. Since even "nonconducting" transistors always leak a small amount, the capacitors will slowly discharge, and the information eventually fades unless the capacitor charge is refreshed periodically. Because of this refresh requirement, it is a dynamic memory as opposed to static random-access memory (SRAM) and other static types of memory. Unlike flash memory, DRAM is volatile memory (vs. non-volatile memory), since it loses its data quickly when power is removed.

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