What is RAM - Random Access Memory? Webopedia DefinitionIn contrast, with other direct-access data storage media such as hard disks , CD-RWs , DVD-RWs and the older magnetic tapes and drum memory , the time required to read and write data items varies significantly depending on their physical locations on the recording medium, due to mechanical limitations such as media rotation speeds and arm movement. RAM contains multiplexing and demultiplexing circuitry, to connect the data lines to the addressed storage for reading or writing the entry. Usually more than one bit of storage is accessed by the same address, and RAM devices often have multiple data lines and are said to be "8-bit" or "bit", etc. In today's technology, random-access memory takes the form of integrated circuit IC chips with MOS metal-oxide-semiconductor memory cells. RAM is normally associated with volatile types of memory such as DRAM modules , where stored information is lost if power is removed, although non-volatile RAM has also been developed. Commercial MOS memory, based on MOS transistors , was developed in the late s, and has since been the basis for all commercial semiconductor memory. Early computers used relays , mechanical counters  or delay lines for main memory functions.
What is RAM memory
The User can write information to it and read information from it. With Ram any location can be reached in a fixed and short amount of time after specifying its address. The RAM is a volatile memory, it means information written to it can be accessed as long as power is on. As soon as the power is off, it can not be accessed. RAM is made in electronic chips made of so called semiconductor material, just like processors and many other types of chips. Physically, RAM consists of small electronic chips which are mounted in modules small printed circuit boards.
The Difference Between Memory, RAM and Storage
RAM vs ROM : Difference between them along with their types
RAM is volatile in nature, it means if the power goes off, the stored information is lost. Most of the programs and data that are modifiable are stored in RAM. The SRAM memories consist of circuits capable of retaining the stored information as long as the power is applied. That means this type of memory requires constant power. Thus this type of memories is called volatile memories. The below figure shows a cell diagram of SRAM.
Introduction to Computing. Random access means that each individual byte in entire memory can be access directly. RAM is used to store data and instructions temporarily. A program must be loaded into RAM before execution. RAM is volatile memory.