Computer memory

                    Computer memory

Main storage is also called memory or internal memory.RAM is excess memory,and is the basic kind of internal memory.RAM is called “random acess”because the processor or computer can access any location in memory.RAM has been made from reed relays,transistor,integrated circuits,magnetic core,or any thing that can hold and store binary values.Must modern RAM is made from integrated circuits.At one time the most common kind of memory in mainframes was magnetic core,so many older programs will refer to main memory as core memory even when the RAM is made from more modern technololy.static RAM is called static because it will continue to hold.