How does the processor work

Designers of Processor are generally quite complex, and they vary from company to company, and even one model of them is very different from the other. At present, two companies like Intel and AMD's processor are in demand in the market. These two companies are always engaged in the same quote as to how to improve the performance of the processor, they also use less space and energy.

But despite having so many architectural differences, the processor has to go through four processes mainly, and then they can process the instructions. These four processes are fetch, decode, execute and write-back. Now you will tell people about all these processes.

1. Fetch

Fetch like this means bringing something. Here, the Processor Core retrieves instructions which are waiting in any memory. But nowadays, in modern Processor, those instructions are already waiting in Processor Cache. There is an area in the Processor called Program Counter which acts like a bookmark, which indicates to the processor where the last instruction has ended and where the next is started.

2. Decode

Once the instruction is fetched, the next process is to decode it. In an instruction, there are several areas of the processor core, such as arithmetic and those who have to recognize the processor core. There is something like this in the whole episode called Opcode which tells the processor what to do by using that instruction. Once the processor recognizes what he has to do, then he does all the things himself.

3. Execute

In this step, the processor knows what to do, and actually activates it. Here's what actually happens, depending on whether the processor core is used in the area and what information is put in it. For example, the Processor uses ALU to perform an arithmetic operation. This operation is believed to be within the ALU. This unit is connected to other input and output so that it can simplify our work and finally give us our results in the right time.

4. Writeback

This can also be said as step, as if its name is its work, which is also similar to the one which puts the result of three work done earlier in the memory to place it in memory. Find out that the output was in the form of where it depends on which an application is being run at that time. But this usually happens in the register of processor, because if it is very high then it is kept here for quick access.

This entire process is called Instruction Cycle. As we progress, we have a better processor, which is very fast and powerful. Our CPU is designed in such a way that it breaks down any of the tasks so that it can be processed quickly. And it seems to be possible with new inventions.