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Chapter 1. Macintosh Basics: Hardware an... > Computing and Storage Hardware

Computing and Storage Hardware

The CPU and ROM

If you opened up any Macintosh model, the most distinctive object you would see is a board full of soldered circuits. It looks like the electronic equivalent of an aerial view of New York City. This is called the main logic board (or motherboard).

Many items are on this board. For now, you are concerned with just two of these items: the central processing unit (or CPU or processor) and the read-only memory module (or ROM). The expression read-only means that the information stored in the module cannot be altered in any way; it can only be read. A compact disc is another example of a read-only storage medium.


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