Main memory (Main Memory Unit)Is a device that is used to remember information and programs on the computer's processor. Sometimes referred to as the primary data storage (Primary storage) Can can be divided into 2 categories:2.2.1 main memory read-only (Read-Only Memory ROM) As a memory semiconductor temporarily read-only type. As the media on your computer because it could not be saved.Repeat (easy) As the software or data already exists and is ready to be taken to a microprocessor directly. This type of memory even without power raised to. It will not disappear from the stockkeeping unit of memory (nonvolatile) Typically used to store information that does not need to be edited, as well as store programs, BIOS (Basic Input output System: BIOS) or the firmware that controls the operation of the computer program used to work for the calculator program using the computer at work.Specific aspects, such as in computer-controlled system used cars circuit. Control in a washing machine, etc.
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