Primary storage (1.2.1) GapFill

Computer systems use primary storage to store  data onto removable storage devicesall programs and data that is currently in useeverything that is currently visible on the screenprograms and data that is not currently in use.

 Virtual memoryRAMMagnetic memoryFlash memory is volatile memory, meaning that when it loses power  the data it stores is erasedit becomes damagedthe data it stores is savedits data capacity is reduced. It is also random-access, meaning that the CPU can access  any memory location in the same amount of timerandom memory locationssecondary storage as though it were main memoryall memory locations at once.  Flash memoryROMRAMVirtual memory is read-only; it  cannot be readcan only be read by internal devicescan only be read by peripheral devicescannot have data written to it. It is also a type of non-volatile memory.  Virtual memoryRAMROMFlash memory is a type of memory that can be non-volatile without being read-only. This allows it to be used for secondary and removable storage. It uses transistors and electrons to represent data, and has faster access speeds than other types of memory used for secondary storage.

The data needed by the currently running programs is held in RAM, also called  SSDflash memorymain memorycache memory; if this is not large enough then   flash memoryROMvirtual memorycloud storage is used, which is stored on secondary storage. The disadvantage of doing this is that it is  more energy-intensive than main memoryslower to access than main memoryread-onlymore expensive than main memory.