What is an arithmetic unit?

Arithmetic unit, also called the arithmetic logic unit (ALU), is part of the central processing unit (CPU). It is often referred to as the "engine" of the CPU because it allows the computer to perform mathematical calculations such as adding, subtraction and multiplication. Alu also performs logical operations such as "a," or "and" no ". The arithmetic unit works along with the registry field that contains data when processing any of these operations. The arithmetic unit consists of many interconnected elements that are designed to perform specific tasks. Other processors may have an arithmetic unit for calculating fixed point operations and other AU to calculate the calculations with movable floating. Some computers have a separate chip known as Numeric Coprocessor. This coprocessor contains a unit with a movable comma for processing operands with moving floating. Coprocessor increases the computer's operating speed due to the coprocessor's ability to calculate faster and more efficiently.

operations are processed when data is loaded into an arithmetic logic unit from one of the input registers or CPU processor. The register is part of the total memory device of the computer that stores data. The data contained in these registers can be obtained much faster than other storage sites. The control unit is part of the internal functioning of the CPU and transmits instructions to the arithmetic control unit. The instructions usually consist of several parts. In general, there is an operating code, at least one operand and in some cases the format code.

Operational code or OPCODE instructs an arithmetic logic unit to which operations to perform. Operands says Alu, where data is located and address where information can be obtained. It also has different functions to be used in calculations such as subtraction or logical comparison. The format code is usually used with an operating code and can inform about the floating instructionalor a fixed point of alu.

typical tasks performed by the arithmetic logic unit include the addition and subtraction, multiplication and division and logical tests. Alu also performs comparison and surgery of bits. A bit shift is a process involved in moving the smallest amount of information (BIT) processed by a computer. The bits are grouped together and create words from 32 to 64 -bit sizes.

arithmetic units can be designed to perform virtually any calculation. For more complicated operations, more expensive alus is needed. These arithmetic units are usually larger and require more space and strength. Smaller arithmetic units can make a calculation, but the completion of T will take longer for a few steps associated with the formula processing.