![]() ![]() In order to free up space in memory, an operating system with a virtual memory capability transfers data that is not immediately needed from memory to the HDD when that data is needed again, it is copied back into memory. The times required to access different addresses (i.e., locations) in RAM are extremely short and nearly equal, in contrast to the longer and varying times required for accessing locations on the HDD and other storage devices. Physically, main memory (also referred to as primary memory) consists of random access memory (RAM) chips that are combined into modules which, in turn, are inserted into slots on the motherboard (i.e., the main circuit board) on a computer. ![]() Memory is used to hold portions of the operating system, programs and data that are currently in use or that are frequently used. Virtual memory is the use of space on a HDD to simulate additional main memory. Swap space is a portion of a hard disk drive (HDD) that is used for virtual memory. ![]()
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