The arithmetic logic unit (ALU) is responsible for all logical and mathematical operations in the system. The ALU receives instructions from the control unit. The ALU can take information from memory, perform computations and comparisons, and then store the results in memory locations as directed by the control unit. An additional type of ALU, called a floating point unit (FPU) or coprocessor, which performs specialized functions such as divisin and large decimal number operations, is frequently used. Most modern microprocessors include an FPU processor as part of the microprocessor. The ALU and control unit communicate with each other and perform operations in memory locations called registers. A register is a location that is internal to the microprocessor that can be used as a scartch pad for calculations. There are two types of registers used in modern systems: dedicated registers and general purpose registers. Dedicated registers are usually used for specfic functions such as maintaining status or system controlled counting operations. General purpose registers are used for multiple purposes, typically when mathematical and comparison operations occur.
When a system malfunctions, as in the case of a Blue Screen of Death, the monitor will usually display a message and multiple numbers. There numbers are the contents of the register and other key memory locations. This information is usually not overly useful for computer technician, but it can provide a great deal of information to developer and technical support professinals as to the nature of the failure. It is a good idea to capture that information before you contact customer support.
by karog December 28, 2004
Get the ALU mug.
'Alus' is the way lithuanians call beer. In fact, lithuanian beer has gained the name of a very tasty and top quality beer.
'Neblogas alus, gal kiek per lengvas' - 'Quite a good beer a little too light, though'
'Vakar geriau iki komos, po to apsivemiau' - 'I vomited after I had got hammered yesterday'
by Saras. July 2, 2007
Get the alus mug.
State of being awesome and happy, being super chill.
Bro 1 : Sup man how are you?
Bro 2 : Im in an Alu mood bro.
by T.O.C September 30, 2010
Get the Alu mug.
alue went the wolves to the moon, on a clear night sky
by Calulu-chan November 6, 2009
Get the Alue mug.
a pretty queen bae appreciate all alus all alus queens bae
person: 😪😪😪😪😪
alu: *exists*

person: 🥰🥰🥰🥰
by ViVi from LOONA September 15, 2020
Get the Alu mug.
arthritic logic unit aka arithmetic logic unit.

see above for an extended definition.
a: are you in cse230?
b: yea, why?
a: what the heck is alu?
b: it stands for arhritic logic unit; but, people usually use arithmetic logic unit.
by alperthereal February 11, 2004
Get the alu mug.