Execution unit

Execution unit

In computer engineering, an execution unit is a part of a CPU that performs the operations and calculations called for by the program. It may have its own internal control sequence unit (not to be confused with the CPUs main control unit), some registers, and other internal units such as a sub-ALU or FPU, or some smaller, more specific components.

It is commonplace for modern CPUs to have multiple parallel execution units, referred to as scalar or superscalar design. The simplest arrangement is to use one, the bus manager, to manage the memory interface, and the others to perform calculations. Additionally, modern CPUs execution units are usually pipelined.

External links

* http://www.cs.umass.edu/~weems/CmpSci535/Discussion10.html


Wikimedia Foundation. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Execution van — Manufacturer Jinguan Group Also called Mobile Execution Unit Production 1997–present Execution vans, also referred to as mobile execution units , were developed by the government of the People s Republic of China and were first used in 1997.… …   Wikipedia

  • Exécution out-of-order — L exécution out of order (« dans le désordre » en anglais) d instructions par un processeur consiste à réorganiser l ordre dans lequel les instructions d un programme vont s exécuter. Ces instructions ne sont alors pas forcément… …   Wikipédia en Français

  • Execution (novel) — Execution is a 1958 war novel by Canadian novelist and Second World War veteran Colin McDougall (1917 ndash;1984). Although it won McDougall the 1958 Governor General s Award for English language fiction, it was his only novel, and after… …   Wikipedia

  • Unit 777 — (in Arabic: الوحدة 777 قتال), also known as Task Force 777, is the military Egyptian counter terrorism unit created in 1978 due to the failure of the Egyptian army commandos action in Larnaca International Airport (19 February 1978) as they… …   Wikipedia

  • Execution chamber — Death Chamber redirects here. For the martial arts film, see Shaolin Temple (1976 film). An execution chamber, or death chamber, is a room or chamber in which a legal execution is carried out. Execution chambers are almost always inside the walls …   Wikipedia

  • Unit testing — In computer programming, unit testing is a method by which individual units of source code are tested to determine if they are fit for use. A unit is the smallest testable part of an application. In procedural programming a unit may be an… …   Wikipedia

  • Execution by firing squad — Firing squad and shot at dawn redirect here. For other uses, see Firing squad (disambiguation). For the UK memorial, see Shot at Dawn Memorial. Part of a series on Capital punishment …   Wikipedia

  • Unit Citation for Gallantry — Infobox Military Award name=Unit Citation for Gallantry caption=insignia worn if a member of the unit when earned (left) and if joined after (right) awarded by=Australia type= Unit Citation eligibility= Australian military units for=… …   Wikipedia

  • unit line number — A seven character alphanumeric code that describes a unique increment of a unit deployment, i.e., advance party, main body, equipment by sea and air, reception team, or trail party, in a Joint Operation Planning and Execution System time phased… …   Military dictionary

  • Central processing unit — CPU redirects here. For other uses, see CPU (disambiguation). An Intel 80486DX2 CPU from above An Intel 80486DX2 from below …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”