Central processing unit (cpu), Basic Computer Science

Central Processing Unit (CPU):

The CPU is the physical device that controls computer operations. It is considered as the 'brain' of the computer system. The CPU comprises three components: The control unit, the arithmetic/logic unit, and the main memory (main storage) All these are composed of microelectronic devices, virtually always based on silicon semiconductor technology.  

The main memory is the largest component of CPU, and is divided into individual computer words, each of which may be accessed individually by its address. All present day computers are based upon semiconductor technology, the ability to place many thousands of electronic components Within a limited area of silicon, which has been doped with carefully controlled amounts of other elements. The main memory holds program instructions and data required as the programs operate. 

The arithmetic/logic unit contains a set of registers or accumulators, individual words of very high speed storage into which words from the main storage are copied, prior to instructions being applied to them. Attached to the registers is the circuitry which carries out the few hundreds of basic operations available to the computer. In essence, when an individual instruction needs to be carried out on some word in the main storage, that word is copied into a register, the appropriate circuitry activated, and the register's contents copied back to the main location. 

The control unit extracts program instructions one at a time in the required sequence from their locations in the main storage, decodes them, and issues instructions to the main storage to access the required word, and to the arithmetic/logic unit to activate the required instruction circuitry.  

Posted Date: 10/24/2012 4:10:35 AM | Location : United States







Related Discussions:- Central processing unit (cpu), Assignment Help, Ask Question on Central processing unit (cpu), Get Answer, Expert's Help, Central processing unit (cpu) Discussions

Write discussion on Central processing unit (cpu)
Your posts are moderated
Related Questions
Suppose you are designing a database for an art museum that owns a large volume of works of art. Each work of art is described by a unique item code, a title, a type, and a size. T

which computer architecture use single bus structure??????? tells the name and little bit working

Open Source Software: Open Source Software (OSS) is software that comes with source code, and importantly also provides rights (typically reserved for copyright holders) to st

SOFTWARE EVOLUTION:  As you know that in a computer system both hardware and software complement each other  -  one is of hardly any use without the other. Hence, since the ve

The CPU has four internal registers, each of 16 bits. The first four, AX, BX, CX, and DX are common use registers and can also be used as 8 bit registers, if used in such a way it

what is Metropolitan area network?

Can someone help me write a code for force = mass * acceleration.

can u write my assignment for me

Question 1 Differentiate between PL/SQL functions and procedures Question 2 Draw the diagram of logical structure of oracle database and explain it in brief Question 3 D