DRAM is built as a capacitor and a switch for each bit - the data is stored as a charge on the capacitor. ... There are leakage currents within the system - between the capacitor plates, across the channel of the transistor, etc. This means that the charge stored on the capacitor will, over time, discharge.
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Volatile Memory is used to store computer programs and data that CPU needs in real time and is erased once computer is switched off. RAM and Cache memory are volatile memory. Where as Non-volatile memory is static and remains in the computer even if computer is switched off. ROM and HDD are non-volatile memory.Nov 26, 2019
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RAM is volatile memory used to hold instructions and data of currently running programs. It loses integrity after loss of power. RAM memory modules are installed into slots on the computer motherboard. ROM (Read-Only Memory) is nonvolatile: data stored in ROM maintains integrity after loss of power.
