1.Arithmetic Logic Unit (ALU):
oThe ALU is a critical component within the CPU. It performs various arithmetic operations (such as addition, subtraction, multiplication, and division) and logic operations (such as comparisons, AND/OR operations, and shifting).
oWhen you perform a calculation on your computer, the ALU processes the numbers involved and produces the result.
oFor example, when you add two numbers in a spreadsheet, the ALU handles the addition operation.
2.Instruction Execution:
oThe CPU executes instructions based on machine code (binary signals represented as 1's and 0's).
oThese instructions come from software programs (applications), the operating system, or other components.
oThe CPU fetches an instruction from memory, decodes it, performs the necessary operation (using the ALU), and then stores the result.
oThis process happens at an incredibly fast rate, allowing your computer to perform complex tasks seamlessly.
3.System Bus:
oThe CPU communicates with other components (such as RAM, storage devices, and peripherals) through the system bus.
oThe system bus consists of three types:
Control Bus: Facilitates communication between the CPU and other devices.
Data Bus: Transfers data between different components.
Address Bus: Identifies memory locations for data access.
References
1.What Is a CPU, and What Does It Do? - How-To Geek
2.What Is The Purpose Of The Central Processing Unit (CPU) In A Computer? - Robots.net
3.Central Processing Unit (CPU) - GeeksforGeeks12