The ALU consists of two main subsections: the Arithmetic Section and the Logic Section
•The ALU’s Arithmetic Section conducts mathematical operations. It performs fundamental mathematical operations including addition, subtraction, multiplication, and division. For mathematical computations in several applications and program, these processes are necessary. Other operations, such as bit wise operations and incrementing or decreasing values, can also be handled by the Arithmetic Section.
•The ALU’s Logic Section is in charge of performing logical operations. Data manipulation based on logical conditions is referred to as logical operations. These operations include choosing or removing certain data elements or fields, comparing values to identify connections (such as equal, greater than, or less than), and merging or combining data in accordance with logical principles. Decision-making, data filtering, and data processing tasks frequently employ logical operations.
•The ALU’s arithmetic and logical functions are crucial for the execution of instructions within the CPU.
•The ALU is responsible for carrying out the necessary arithmetic or logical operation specified by the instruction when retrieved and decoded by the Control Unit.
•For instance, the Arithmetic Section of the ALU will perform the addition operation and output the result if an instruction calls for adding two integers.
•Sometimes, a CPU may contain multiple ALUs to enhance its processing capabilities.
• Multiple ALUs can work simultaneously, allowing for parallel execution of operations and speeding up computation tasks. This is especially beneficial in CPUs with multiple cores or processors designed for high-performance computing.
•ALU is a main component of the central processing unit.
•It is also known as an integer unit (IU) that is an integrated circuit within a CPU or GPU, which is the last component to perform calculations in the processor.
•It also involve in Boolean comparisons (XOR, OR, AND, and NOT operations).
•When the ALU completes the processing of input, the information is sent to the computer’s memory.
•the ALU’s design and function may be different in the different processors.
•Some ALUs are designed to perform only integer calculations, and some are for floating-point operations.
•Some processors include a single arithmetic logic unit to perform operations, and others may contain numerous ALUs to complete calculations.
•The logical operations consist of NOR, NOT, AND, NAND, OR, XOR, and more.
•It is responsible for displacement in the locations of the bits to the by right or left by a certain number of places that are known as a multiplication operation.
•Although it performs multiplication and division, this refers to bit addition and subtraction.
•But multiplication and division operations are more costly to make.
•In the place of multiplication, addition can be used as a substitute and subtraction for division.
Advantages of ALU
•It supports parallel architecture and applications with high performance.
•It has the ability to get the desired output simultaneously.
•It has the capability of performing instructions on a very large set and has a high range of accuracy.
•Two arithmetic operations in the same code like addition and multiplication or addition and subtraction, or any two operands can be combined by the ALU.
•It is very fast; hence, it provides results quickly.
•There are no sensitivity issues and no memory wastage with ALU.
•They are less expensive and minimize the logic gate requirements.
