Question

When the computer is swichted on, the content disappear from RAM.Is it true

Answer 1

Answer:

RAM is often referred to as volatile memory, because anything contained in RAM is considered lost when a computer is switched off. Indeed, all data is lost from RAM when the power supply is disconnected; so it is volatile in this context.

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Answer 2

Answer:

RAM is often referred to as volatile memory, because anything contained in RAM is considered lost when a computer is switched off. Indeed, all data is lost from RAM when the power supply is disconnected; so it is volatile in this context.

Explanation:

It is — and it isn’t.

There’s a good chance that if you flick the power to your computer off and bring it right back on the contents of your RAM will still be there. If you flip it off for a second or two, half of what was there will still be there. If the computer is off for more than a few seconds, most of the information will be lost. Some information, however, will remain.

The reason for this is that most modern computers use a memory technology called DRAM, or Dynamic Random Access Memory. It is very fast, but draws more power because it has to be refreshed periodically. The cells that hold the memory bits are essentially small capacitors. All materials have resistances, so the charge in these capacitors will leak away over time. If the charge in the capacitors is not refilled (if the bit is a 1), then the information will be lost. It is because of this phenomenon that the information in RAM is lost when you shut your computer off.

The rate at which these tiny capacitors drain is highly dependent on manufacturing processes and tolerances in the materials used to create the silicon within which they are embedded. Some may leak faster than others. Certain kinds of DRAM may need to be refreshed more frequency than others.

There are certain types of RAM that don’t need to be refreshed, and don’t draw power to save their data. Check out . This technology would be used in place of DRAM if it weren’t so expensive to manufacture and if it rivaled DRAM in terms of access speed.