The preceding section highlighted stand alone processors. Although they are used for
many applications, including some high-horsepower processing engines, the vast majority of smaller embedded systems employ some type of integrated processor, or system on chip (SOC). Scores of SOCs exist to choose from. This section examines a few
from the industry leaders and looks at some of the features that set each group apart.
Several major processor architectures exist, and each architecture has examples of
integrated SOCs. Power Architecture has been a traditional leader in many networking and telecommunications related embedded applications, and MIPS may have the
market lead in lower end consumer grade equipment.
ARM is used in many cellular phones. These architectures and, of course, IA32/64 represent the major architectures
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