Contents

Execution unit

Part of a CPU which performs the operations instructed by the program

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages) This article includes a list of general references, but it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations. (December 2014) (Learn how and when to remove this message) This article's factual accuracy may be compromised due to out-of-date information. Please help update this article to reflect recent events or newly available information. (December 2016) (Learn how and when to remove this message)

Incomputer engineering, an execution unit (E-unitorEU) is a part of a processing unit that performs the operations and calculations forwarded from the instruction unit.^[1] It may have its own internal control sequence unit (not to be confused with a CPU's main control unit), some registers,^[2] and other internal units such as an arithmetic logic unit,^[3] address generation unit, floating-point unit, load–store unit, branch execution unit^[4] or other smaller and more specific components, and can be tailored to support a certain datatype, such as integersorfloating-points.^[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.

References[edit]

This computer-engineering-related article is a stub. You can help Wikipedia by expanding it.