Semiconductor memory has the property of random access, which means that it takes the same amount of time to access any memory location, so data can be efficiently accessed in any random order. This contrasts with data storage media such as hard disks and CDs which read and write data consecutively and therefore the data can only be accessed in the same sequence it was written. Semiconductor memory also has much faster access times than other types of data storage; a byte of data can be written to or read from semiconductor memory within a few nanoseconds, while access time for rotating storage such as hard disks is in the range of milliseconds. For these reasons it is used for main computer memory (primary storage), to hold data the computer is currently working on, among other uses.
Other articles related to "memory, semiconductor memory":
... In computing, memory refers to the physical devices used to store programs (sequences of instructions) or data (e.g ... The term primary memory is used for the information in physical systems which function at high-speed (i.e ... RAM), as a distinction from secondary memory, which are physical devices for program and data storage which are slow to access but offer higher memory capacity ...
... RAM (Random access memory) has become a generic term for any semiconductor memory that can be written to, as well as read from, in contrast to ROM (below), which can only be read ... It should be noted that all semiconductor memory, not just RAM, has the property of random access ... Volatile memory loses its stored data when the power to the memory chip is turned off ...
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