... RAM. CMOS RAM has a battery to keep the data. Therefore the data is not lost when the main power to the computer is closed. The main part of RAM may either be static or dynamic.> Static RAM is more expensive but allows for faster transfer of data> In dynamic Ram, the contents will "decay" even when the power is on, and so needs to be continually refreshed which slows down your computer. ROM: Read only memory contains the start up sequence for a computer system, this will also include the BIOS. Once the computer is switched on the BIOS will load up the rest of the operating system to allow the user to use the computer. The data in ROM cannot be altered or deleted, unless it is erasable and reprogrammable (EPROM) however this can only be reprogrammed a fixed number of times before it wears out. ROM is ...

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