What is CPU? Know why CPU is called the brain of computer

What is CPU? Know why CPU is called the brain of  computer

CPU, which is the brain of the computer. Have you ever wondered What is CPU? Know why CPU is called the brain of computer, why the CPU is called a computer brain? Why is CPU so important for computers? If you don't know about it, no problem. In today's post, you will get complete information about CPU.

The main role of the CPU is in the functioning of the computer. Without this, the computer cannot do anything. Let's understand the information about CPU in Detail.

What is CPU?

The CPU is also called the brain of the computer, it is the main part of the computer. It is also called Processor or Microprocessor. All the computer software is installed in the CPU itself, it controls all the functions of the computer.

The CPU processes the information coming to the computer, all the data of the computer is stored in the CPU itself. Whatever input we put in the computer, the CPU processes that data and converts it into output.

CPU Full-Form 

Full form of CPU is Central Processing Unit

Do you know how many buttons are in the CPU? So friends CPU usually has 3 Button. The first is for On / Off, the second for Restart and the third is Button to open and close the Cd Slot. By the way, each CPU is different in which the number of Buttons is also different which can be from 6 to 7.

Friends, all types of CPUs vary. Hence CPU price also varies. The CPU price is determined by the company.

Whatever information is given on the computer, the CPU operates all those information such as Arithmetic, Logic, and other information. The CPU is also called the Processing Unit, in today's time, along with the size of the computer, the size of the CPU has also reduced.

Types of CPU

When you purchase a new computer or think of building it yourself. So the selection of processor is most important for that. Because you know, a CPU (Central Processing Unit) means that the processor handles all the important components of a computer. The performance of a computer system depends on its processor. By reading the different types of CPU mentioned below, you will know which processor will be better for your computer.

Single-Core CPU

These types of CPUs can execute or execute only a single process at a time. Core determines the capacity of a processor. This is the oldest type of CPU chips. Which were used in earlier computers? Computing devices that have single-core CPUs, their performance is not very good. Especially in multi-tasking.

On running more than one program or application, you will see that their processing capacity will start slowing down. Due to the single-core in the processor, the number of the other comes only after the completion of one operation. This causes the other operation to wait for processing. The performance of such CPUs depends on their clock speed, which is a measurement of their power.

Dual-Core CPU

As the name suggests, these CPUs have two cores. That is, we can say that these types of CPUs have the capacity of two processors. Now because Dual Core CPUs have the capacity of two CPUs, they can perform more than one operation in comparison to a single core. Their processing speed is also higher than that of single-core CPUs.

The technology that these CPUs use to perform processes is called dual-core technology. One thing to keep in mind is that the CPU can execute only one process at a time. But through this technology, two processor cores are combined into a single silicon chip.

Quad-Core CPU

This means a processor with four cores. That is, each core can process and execute a program with independence. You can say that the workload of a computer system is split into four CPUs. In today's multi-tasking environment, these types of CPUs are seen more.

The programs and operating systems running on the computer has a special type of code, known as SMT Code (simultaneous multi-threading technology), to be able to use the capabilities of the quad-core CPU. These types of CPUs work on a multiprocessor architecture. It is a better processor in terms of capabilities than the single and dual-core CPUs mentioned above.

CPU Models

The CPU or Central Processing Unit, called the brain of the computer, is available in many different models nowadays. These models are specially made by well-known companies like Intel and AMD. The following are some CPU models.

Core Class (i3, i5, i7, and i9)

Intel launched the Core "i" series in 2008. The same model replaced the previously used Core Duo and Solo CPUs. All these processor models are designed for systems with different performances. If you want to use these models of Intel. So you should know the difference between them.

Core i3: This processor model of Intel is designed for the casual user and budget gamer. The i3 processor is usually based on 4 cores and 4 threads.
Core i5: It is based on CPU, 6 cores, and 6 threads, which is designed keeping in mind the needs of a heavy user.

Core i7: This CPU model has 6 cores just like the Core i5, but the number of threads is 12. Because of which it helps a lot in heavy CPU uses or multitasking. If you want a high-level computer system, then Core i7 is a great option.

Core i9: This is the most recent Core processor, which has 10 cores and 20 threads. The recently launched Core i9 is the best processor ever.

Pentium Class (Pentium, Celeron, Xeon)

The Pentium CPU model was first introduced in 1993 by Intel. These were the most commonly used CPU models in general-purpose computers. However, when the core line processors were introduced in 2006, their usage was reduced to a great extent. But even today, the Pentium 4 dual-core is used in many PCs.

AMD (Athlon, Duron, Sempron, Opteron, Phenom, Ryzen)

AMD is the world's second-largest CPU manufacturer. It introduced its first Pentium-compatible CPU (K5) in 1994. After this, AMD launched its remaining processor models one by one in the market. The names given above are the models offered by it.

Apart from this, many other CPU models are also available. But the above-mentioned models are used the most. So if you want to build a computer system, for that you have to choose the processor according to your need. Apart from this, also see that the processor you choose supports your motherboard.

How to see your CPU model?

If you want to check your PC's CPU model and its details, then for that you have to follow the method given by us. In this way, not only will you be able to get information about your CPU, but you will also be able to see the overall technical specifications of a computer system. There are many ways to learn about CPU models.

If you press the Windows Key and Pause key simultaneously, the entire information of the entire system will be opened in a new window in front of you. In this, you will know the processor name (eg., Intel, AMD, Pentium), model (eg., Core (TM) i5), model number (eg., 3570), frequency (eg., 3.40GHz), number of cores (eg., 4 CPU), etc.

There is also another way, in which you go to the window menu and search for Run. Now open this software. Now here you have to enter msinfo32 by typing this command. A window of system details will open in front of you.

How does CPU make?

Understanding how the CPU is made is a bit complicated. But then we will try to explain it to you in an easy language. Sand is used to making a CPU. Silicon dioxide is found in significant amounts in the sand, which is a material required to make semiconductors.

In the first stage, the sand is heated to high temperatures. It is then purified with the help of various chemicals. As a result of which we receive silicone in the cylinder shape, it is called an ingot. Now with a thin saw, that ingot is cut into several slices, we call them wafers.

These slices are then polished with the photosensitive chemicals. In the next step, the design of the transistor is printed on those silicon slices via ultraviolet laser. Once the design of the transistors is printed on those slices, we connect them together using very tiny wires.

At the end-stage, they are tested and after that, the silicon chip is sealed in the metal cover and sent to you. Although this process is not so easy. But we hope to try to explain to you in an easy language, you must have understood the information.

Where is the CPU located on a computer?

Often whenever we hear the name of CPU, the picture of a big box starts popping in our mind. Especially those who do not have much information about the computer. 

They think that the big box is the CPU. But this is not the case, that box is a system box, inside which all the internal components of the computer are present.

These internal components also include the CPU, which is a chip of small and square shape. It is fitted in the CPU socket on the motherboard. The CPU often heats up after running for a while.

 To avoid this, a cooling fan is attached to it. That is why whenever you open the computer box, you will find the CPU under this fan.

How does a CPU work?

How does a CPU work?

You must have seen the CPU while using the computer and would have thought that it is connected to the computer, then friends do not work only because the CPU does not work.

There is a Chip inside the CPU, it is called Processor. The Processor controls all components of the computer. A Processor is an electronic device that is embedded in a computer's motherboard. Processor performs all the programming of the computer.

CPU consists of some parts, parts of this CPU is the very main part.

What is CPU Cores?

Each CPU is made up of at least one processor that performs all the processing. For a long time, the CPU has had to operate from a single processor.

This processor is called the processing core.

Over time, advanced technology-enabled a CPU to be used multicore (processor).

Today, a single CPU can have more than one processor. Based on the numbers of these processors, the CPU is being named.

• Dual-Core - A CPU that has two processors and is called a dual-course processor. You must have heard the cellar in the computer store saying that it is a dual-core processor. Then he is talking about this. Intel Pentium Dual-Core Processors are the same category of processors.

• Quad-Core - A CPU that consists of four processors is called a quad-core processor. Intel i5 Processors are counted in quad-core processors.

• Hexa-Core - Now you too must have guessed how many processors we are going to tell. You caught right six. A CPU that has six processors is called a Hexa-core processor. Some processors of Intel i5 and Intel i7 Processors are processors of this category.

• Octa-Core - Having eight processors in the CPU makes it an octa-core processor. Processors after the 9th Generation of Intel i7 Processors series are counted in this category.

Parts of CPU

Parts of CPU

Next, you have been told about the parts that make up the CPU, so let's know how many parts of the CPU are there.

ALU (Arithmetic Logic Unit)

This unit performs Arithmetic Calculations, such as addition, subtraction, multiplication, division, etc. It also performs logical operations, such as comparing, matching, speeding up the working ALU.


Memory is the main part of CPU, it is a storage device. It is used to store data on a computer. It is also called Computer's Main Memory, Internal Memory, Primary Memory.

CU (Control Unit)

It receives information from the computer's memory and controls Input-Output. Control Unit controls all the functions of a computer.

These were the parts of the CPU, now we will learn about some more parts of the CPU further.

Internal Parts of CPU

CPU parts

Above we told you the main parts of the CPU. Now we will tell you about the internal parts of the CPU.


Motherboard: Motherboard keeps all the hardware of the computer such as Mouse, Key-board, Printer together. The motherboard is the Man Printed Circuit Board of the computer and the Central Communication Board of the computer.

RAM (Random Access Memory)

RAM: The full form of RAM is Random Access Memory. It is embedded inside the CPU. Ram Computer has a Memory Device. It is made of a chip. It is paired with the Computer Motherboard. Ram has a direct connection with CPU.

ROM (Read Only Memory)

ROM: Full form of ROM is Read-Only Memory. It is the internal storage device of the computer. In this, you cannot change the files stored in it, if the files stored in it are connected to the computer software, then changing more can cause a problem in the computer.

Hard Disk

Hard Disk: It stores a lot of information. Hard The disk has memory permanent. Even after shutting down the computer, the Save Program and Data Save remain in it, does not end.

Power Supply

Power Supply: It supplies power to the computer and is fitted with a fan, it has different types of wires for power supply to the Mother Board, Hard Disk, Dvd Writer. Its Main Switch is behind the CPU.

What are the parts of a CPU? We told you this, now we will tell you what CPU works

Central Processing Unit Functions (CPU Function)

Those who get information about the computer must have complete knowledge of the CPU. Because if we say that we know everything about computers and do not know what the CPU is, then it is wrong.

How does the central processing unit working as the brain of computer work? Which resolves our problem by completing every calculation in such a speed within seconds.

It is not a miracle but science that we spend hours doing work with copy and pen, it solves it just by pressing an enter button.

Even though the CPUs of today are very developed, but their way of working is the same basic function that used to do the old ones.

Its basic functions are fetched, decode, and execute. Let's get information about them in detail.


Fetch means "to bring". In this step, instructions are received from the program memory. Instruction means numbers or series of numbers. Instruction is many but how does one know which instruction is in which place?

So for this, there is a Program counter (PC) that determines the address (location) of the instruction in the program memory. The program stores the address of the counter instruction as a number.

When an instruction fetch is received, the length of the Program Counter is increased according to the length of the instruction so that it holds the address of the next instruction.


The instruction that is brought from memory by fetch shows what the CPU has to do now.

Decode means instruction to the decoder. In this step, instruction is passed in a circuit which is also called instruction decoder, which converts instruction into the signal from which other parts of CPU is controlled.


After bringing Instruction and converting it into the signal, the third step is executed. Depending on the design of the CPU, there may be one action or several actions to execute.

Sends decoded instruction to CPU relevant parts so that it can do its work based on parts instruction.

In this way action or series of actions is completed. The results are then written to the internal CPU register. This creates a reference for the subsequent instruction.


After the execution of the process is complete, the result of the writeback gets store in some form of memory. In a particular instruction set, they are written to the CPU register so that they can be accessed immediately. They are known by the name of jumps, and their behavior is in the loop.

What is the importance of CPU?

The Central Processing Unit is also called the brain of the computer. This completes the arithmetic and logic calculation of the computer. Every work is completed through this. The existence of a computer without a CPU is not possible.

Friends, if we talk about computer systems when someone goes to the market to buy a desktop system, then he keeps the most attention about the capacity of the CPU and what is its configuration.

The processor, RAM, memory all come inside it. If someone goes and picks up the computer without any such meaning, then he will know about it later when he will not be able to do so many times. As it happens, it buys a CPU with that capacity.

If you work in video editing or work in designing software, then you will not have to take the system according to the design, otherwise, you will not be able to do your work in the central processing unit with slow performance.

You have already seen how the central processing unit receives the instruction and decodes it in the signal and then sends it to different components to complete the task associated with it.

Central processing unit is also very important for high-performance work.
Benefits of CPU – (Advantages of Central Processing Unit)

By the way, the computer is very useful to us, but if we talk about how we benefit from the CPU, then it is also important to know.

Because without its knowledge you cannot identify the computer according to your work. So, let us know about some of the important advantages of such a Central Processing Unit.

Dynamic Circuit

Today's modern computer processors are mainly dynamic circuits. There are millions of small switches that we call transistors.

When a user inputs data while working in an application, the other parts of the Processor control the configuration of these switches. Neither small switches make a dynamic circuit which is very complex. Through this, the computer completes its function.

Fast calculation

The first advantage that computer processors have is that they complete the mathematical calculation at a very fast speed.

This is the reason that the computer is far ahead of humans in doing some tasks like mathematical modeling. The ability of a computer to work is based on this fast calculation, whether it is playing games or designing work.

Controlling the basic functions of computers

The processor is very important for any computer. Other parts of the computer are attached around it. Without this, every part of the computer will simply remain as a structure.

What is CPU? Know why CPU is called the brain of  computer.

Every input-output device connected to the computer works through this so that the input data goes into the processor and after processing it shows it as output. The computer starts its work from where the processor is.

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