What is CPU ?
Do you know what the full name of the CPU is? Full form of CPU is Central processing unit. It is a small piece of hardware that processes all the instructions of the computer program. It handles all important tasks of computer system such as arithmetical, logical, and input / output operations.
CPUs are made in such a way that microscopic transistors can be placed in a single computer chip in the amount of billions. All the calculations are done with the help of this transistors which are needed to run the programs which are stored in the memory of the system.
The CPU is also called the brain of the computer because - all instruction, no matter how simple it is, all have to go through the CPU. For example, you type an alphabet like L then it appears in the screen. The CPU has a hand in making it appear in the screen.
For this reason, the CPU is also referred to as the central processor unit, and in short it is called the processor. So when you are looking at the technical specification of a device in an electronic store, then the processor specification that is there is the CPU.
When we discus about different types of CPU, we mean its speed. Like how soon he completes all the functions. We need only speed in doing our work, the sooner our work is processed, the sooner we can do any new work easily.
As our instruction complex becomes like 3D animation, editing of video files etc. in such a situation, we need more better CPU. Therefore, whatever technological advances have been made in processor technology, speed has been the most important reason behind all of them.
CPU Full Form
The full form of CPU is Central Processing Unit.
How CPU Work ?
You need to know what the CPU does. By the way, we know that the CPU that works are very important, but now we will know how this CPU works. Since the creation of the CPU, so many improvements have been made in it in the last several years.
Despite so many improvements, the basic function of CPU is still the same. Its basic functions are fetch, decode, and execute. Let us know about them in detail.
Fetch
As the word suggests, instruction is received in it. In this instruction means the series of numbers which is passed from RAM to CPU. Each instruction is only a small part of an operation, so the CPU must know which instruction is coming next. The current instruction address is maintained by the program counter (PC).
PCs and instructions are then placed in the Instruction Register (IR). After that the PC length is extended so that it can be referenced at the next instruction's address.
Decode
Once the instruction has been fetch and stored in IR, then the CPU passes that instruction into a circuit called instruction decoder. It then converts that instruction into signals which are then passed by the parts of the other CPU for further action.
Excute
This is the last step, in which decoded instructions are sent to relevant parts of the CPU to be completed. Then the results are often written to the CPU register, where they can be referenced by later instructions. Here you can understand them as the memory function of your calculator.
Types Of CPU
When you purchase a new computer or think of building it yourself. So for that the selection of processor is most important. 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 CPUs mentioned below, you will know which processor will be better for your computer.
Single Core CPUs
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.
Dual Core CPUs
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 are able to perform more than one operation in comparison to single core. Their processing speed is also higher than that of single core CPUs.
Quad Core CPUs
This means a processor with four cores. That is, each cores can process and execute a program with independence. You can say that the workload of a computer system is split to four CPUs. These types of CPUs are seen more in today's multi-tasking environment.
