What is ALU ? How the Arithematic Logic Unit Works

What is ALU?

                                         

                                                                           

An  Arithmetic Logic Unit (ALU) is a digital circuit used to performed arithmetic and logic operations. It represents the fundamental building block of the central processing unit that is CPU of a computer modern CPU’s contains the very powerful and complex ALU’s, the addition to ALU’s. Modern CPU contains a control unit (CU)

                                                 

Most of the operations of a CPU are performed by one or more ALU’s which loads the data from inputs registers. A register is storage available as part of a CPU. The control unit tells the ALU what operations in perform on that data, and the ALU stores the result in an output registration. The control unit moves the data between these registers, the ALU, and memory

                                                     

How the Arithmetic Logic Unit Works?

                                                 

An ALU performs the basic arithmetic and logic operations are components of the values as a NOT, AND, and OR

        

All information in a computer stored in a manipulated in a form of binary numbers, i.e. 0 and 1. transistors switches

                                                         

 are used to manipulate binary numbers since there are only two possible states of switches: Open or closed. An open transistor, through which there is a  no current, represents 0. A close through there is currently representing 1

                                                 

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