In computer engineering, an execution unit (E-unit or EU) is a part of a processing unit that performs the operations and calculations forwarded from the instruction unit.
[5] It is common for modern processing units to have multiple parallel functional units within its execution units, which is referred to as superscalar design.
[6] The simplest arrangement is to use a single bus manager unit to manage the memory interface and the others to perform calculations.
Additionally, modern execution units are usually pipelined.
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