Differences

Difference between ALU and CU

Main difference functions of alu and control unit

ALU and CU are the two basic components of a CPU (Central Processing Unit) in a computer system. ALU stands for Arithmetic Logic Unit, while CU stands for Control Unit. The ALU circuit of the CPU takes care of all the logical and mathematical operations that the CPU performs. You are responsible for answering the questions and providing the output of the input queries. The Control Unit (CU) is the part of the CPU that is dedicated to dealing with the control purpose. It coordinates with all hardware components of the computer system and helps them interact with the software system. CU assigns the tasks and monitors the movement of data and information within a computer system between its components.

Comparative chart

ALU CU
Definition ALU (Arithmetic Logical Unit) is a circuit component of the CPU that deals with mathematical calculations, data processing and the deduction of all logical conclusions and outputs. CU (Control Unit) is one of the two main components of the CPU. It deals with the coordination between the hardware devices attached to each one, it works as an interactive bridge between the software and the hardware of the computer system.
Features ALU takes care of all mathematical and logical operations. More than one ALU can be used to perform more powerful calculations. The ALU processes the data provided to the CPU as input and provides the information as the conclusion of the input in the form of output. CU takes care of the direction of all the tasks and operations carried out by the CPU. Coordinate and monitor component functionality and track data flow between hardware components and software.
Impact on the other ALU takes care of data manipulation and works in accordance with the instructions provided by CU. CU provides the instructions to ALU and coordinates according to the nature of the data provided and the nature of the work to be performed.

What is ALU?

functions of alu and control unit
functions of alu and control unit

ALU stands for Arithmetic Logical Unit. It is the main functional component of the CPU that is responsible for performing all mathematical calculations and logical operations. Data provided as input to computers is manipulated and processed by ALU based on instructions and directions provided by CU. ALU is responsible for all mathematical calculations and logical answers. All queries or data inserted as input to the system are provided to the ALU, which provides the processed findings as output. The arithmetic operation includes the four basic mathematical operations: addition, subtraction, multiplication, and division. Logical operations are those in which there is a comparison between different things by various traits such as equal to, greater than, different from, less than, etc.

What is CU? functions of alu and control unit

functions of alu and control unit
functions of alu and control unit

CU stands for Control Unit. It is one of the two basic components of a CPU in a computer system. The control unit functions as a traffic watchdog, as it monitors and controls data traffic and the flow between hardware components of the computer system, such as peripheral devices, etc. Provides instructions to the ALU and other components on how to perform a task. CU is responsible for coordinating between the software system and the hardware components and making them act as a bridge. It assigns the tasks to the interior hardware components and does them within the proper time domain along with efficiency and effectiveness. CU’s main deal is data traffic and buses. It carefully monitors and controls data traffic and maintains the flow of data through data buses to and from hardware components. It is also known as the “brain within the brain” or “CPU brain” as it instructs the software system, hardware components, and other CPU circuitry (ALU) what to do and how to do it. Instructs and directs based on data type, nature of work, and user demand for output.

ALU vs. CU

  • ALU is the circuit component of the CPU that deals with mathematical and logical operations.
  • CU is the circuit component of the CPU that instructs and directs the ALU and other components of the computer.
  • ALU processes the data provided as input and gives the conclusion of the processed information as output. It works according to the instructions provided by CU.
  • CU controls and monitors the flow of data on the data buses between the hardware components of the computer system.

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