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read-only memory: (computer science) memory whose contents can be accessed and read but cannot be changed

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Posted by waqasahmad

Rom is read only memory. The data store in RAM are fixed and can't remove. The Operating system uses the data to operate system booting system

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Posted by HamidAliKhan

ROM contains the power on diagnostics, a bootstrap program and operating system software . To perform upgrades the physical chips must be removed and replaced.

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Posted by vishwesh