What does it mean when memory is described as volatile?

When memory is described as volatile, it specifically means that it requires power to maintain stored data. This type of memory loses its contents when the power is turned off or lost.

For example, RAM (Random Access Memory) is a common type of volatile memory. While a computer is running, it uses RAM to store and quickly access data that is actively being worked on. However, once the computer is shut down or experiences a power failure, all the information stored in RAM is lost.

In contrast, non-volatile memory, such as hard drives or flash drives, retains data even when there is no power, which is not the case with volatile memory. Thus, the definition of volatile memory is clearly aligned with the requirement for power to keep the data intact.