Central processing unit: Difference between revisions

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copyedit; should we be re-explaining how a computer works here?
not everything that computes relies on a "central" processing unit
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Two typical components of a CPU are the arithmetic logic unit (ALU), which performs arithmetic and logical operations, and the control unit (CU), which extracts instructions from memory and decodes and executes them, calling on the ALU when necessary.
 
Not all computational systems rely on a central processing unit. An array processor or [[vector processor]] has multiple parallel computing elements, with no one unit considered the "center". In the [[distributed computing]] model, problems are solved by a distributed interconnected set of processors.
 
==History==