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Memory

Basics: Why and How to Add Memory

Adding memory to your computer is the single most common (often the only) hardware modification that the average Mac user will make. The terms memory, RAM, and DRAM (Dynamic Random Access Memory) will be used pretty much interchangeably here. But that's hardly the end of it. There are many more acronyms to confront before we are done.

Memory is added to your computer in the form of "memory modules" (also called "memory cards" or "memory chips") that fit into special "RAM slots" on your Mac's logic board. These modules look a bit like miniversions of PCI cards described earlier. These memory cards provide the RAM (random access memory) for your Macintosh (as first described in Chapter 1). Thus, if someone claims to have "128 megs of RAM" in their machine, this means that a total of 128MB of memory modules are installed on the Macintosh's main logic board.


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