RAM & ROM

RAM & ROM

1. ROM

   • Once data has been written onto a ROM chip, it cannot be removed and can only be read. Unlike main memory (RAM), ROM retains its contents even when the computer is turned off. ROM is referred to as being nonvolatile, whereas RAM is volatile.
   • ROM is memory that cannot be changed by a program or user. ROM retains its memory even after the computer is turned off. For example, ROM stores the instructions for the computer to start up when it is turned on again.

2. RAM

   • RAM (pronounced ramm) is an acronym for random access memory, a type of computer memory that can be accessed randomly; that is, any byte of memory can be accessed without touching the preceding bytes.
   • RAM is a fast temporary type of memory in which programs, applications and data are stored. Here are some examples of what's stored in RAM: the operating system applications ,the graphical user interface (GUI) .If a computer loses power, all data stored in its RAM is lost

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