- is a from of computer data storage . a random access memory device allows data items to be accessed (read or written) in almost the same amount of time irrespective of the physical location of data inside the memory . In constrast,with other direct-access data storage media such as{hard disks,CD-RWs,DVD-RWs}and the older (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 limitation such as media rotation speeds and arm move ment.
- Today, random-access memory takes the form of integrated circuits . RAM is normally associated with volatile types of memory (such as DRAM memory modules),where stored information is lost if poweris removed,although many-efforts have been made to develop non-volatile RAM chip . other types of non-volatile memory exist that allow random access for read operation, but either do not allow write operations or have limitions on them . these include most types of ROM and a type of flash memory called NOR-flash.
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