What is a CPU and what does it do?

It is called the central unit. You can also think of it as the brain of the computer. The CPU is the basic component that provides the computer's computing power and enables programs to be executed.

The CPU consists of microchips that perform various basic functions. These include the control unit, the arithmetic logic unit (ALU), registers and the cache.

The main tasks of the CPU include:

Execute Commands: Receives and processes commands contained in computer programs. These instructions may contain data to manipulate, perform mathematical operations, or manipulate data in memory.

Data Processing: The CPU produces the desired results by processing the data it receives. These operations include mathematical calculations, logical decisions, data copying, memory access, etc. it could be.

Control: The CPU synchronizes all computer components. It receives commands one by one, executes them, and forwards the results accordingly.

The operating principle of the CPU is quite complex, but essentially boils down to the following steps:

1.Receiving Instructions: The CPU receives instructions from the computer's random access memory (RAM). These commands are the codes of programs executed by the operating system.

2.Instruction processing: The CPU interprets and processes the instructions it receives from the control unit and the arithmetic logic unit (ALU) to execute them. The ALU performs mathematical operations and makes logical decisions.

Memory Access: The CPU fetches necessary data and instructions from memory units such as RAM or cache. Cache is a faster type of storage that stores frequently used data.

3.Register Usage: The CPU uses small memory units called registers to store temporary data. Registers are units that the CPU can access quickly but can store a limited amount of data.

Execution and output: The CPU executes the received instructions and sends the results to various output devices (e.g. display, audio output, storage devices).

4.These basic principles enable the CPU to operate through intricately programmed circuits. The CPU is one of the most important components of modern computers and the performance of the computer is largely determined by the speed and efficiency of the CPU.