Example of random-access memory: Synchronous, primarily used as main memory in,, and. Random-access memory ( RAM ) is a form of that stores and currently being used. A memory device allows items to be or written in almost the same amount of time irrespective of the physical location of data inside the memory. In contrast, with other direct-access data storage media such as,, and the older and, 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 and circuitry, to connect the data lines to the addressed storage for reading or writing the entry. Download Free Sam Amidon I See The Sign Rarlab on this page. Windows Server 2008 Iis Configuration Pdf To Word. 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 '16-bit', etc. In today's technology, random-access memory takes the form of. RAM is normally associated with types of memory (such as ), where stored information is lost if power is removed, although non-volatile RAM has also been developed. Other types of exist that allow random access for read operations, but either do not allow write operations or have other kinds of limitations on them. These include most types of and a type of called. Integrated-circuit RAM chips came into the market in the early 1970s, with the first commercially available DRAM chip, the, introduced in October 1970.