The four principal approaches to multithreading are: interleaved (fine-grained), blocked (coarse-grained), simultaneous, and .

Chip multiprocessing

Explanation:

In the Chip Multiprocessing, it can be seen that the entire processor is usually being replicated in a single chip in such a way that each of the processors handle different threads separately.  

The advantage this approach brings is that the logic area available on a chip is mostly used well to the extent that it does not depend on the ever-increasing complexity that are found in pipeline design.  

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