RAM

RAM (Random Access Memory) is a kind of computer storage that the contants can do access in even time and don’t care with data position in memory. This is contradiction with memory tool. Like magnetic tape, disk and drum, whichmechanical movement from storage media to force computer to access data with chronological.
The first time knowed in 60th years. in that time semiconductor memory not popular, because the price that very expensive. During more common used primary magnetic memory.Semiconductor company like Intel begun debut with to producted RAM. to be exact kind os DRAM.

Usually RAM can write and read. contradiction with memory (ROM)/(Read Only Memory) only can read. Usually RAM used to primary storage in computer to used and to change information with active. Although some tool used some kind of RAM to available second storage to long time. But there is the opinion that ROM is other kind of RAM, because the really characteristic too Random Access Memory like SRAM or DRAM. just actually write process to RAM need specifically process which not easy and flexible like SRAM or DRAM. Beside that some part of RAM address space from a system which enter into one or two ROM chip