What is CPU and how does it work?
Do you know
what this CPU is? Why is it also called the brain of the computer? There are
many questions which often bother many people. Just as our brain in our body
controls all our processes, similarly in a computer also the CPU controls all
the processes going on in and out, especially that is why CPU is also called
brain of the computer.
It handles
all the instructions given by the user, and it is above the capacity of the CPU
how quickly and according to how it processes those instructions. The sooner
they can do this, the better or efficient CPU is called. Let's get some
information about CPU.
As
advancement in technology is happening, we need fast CPU to process more and
more complex processes, which can easily do these complex calculations and can
handle many processes simultaneously, This thing is also called Multitasking.
This is why Software and Hardware Developers are always engaged in making
better CPUs because their demand also keeps increasing. Let's take an example
to understand.
When you go
to the shop to buy a laptop or a desktop, they tell you about some technical
specifications such as 64 bit quad core Intel i7, or i5 etc. If you are not
from the field of computer then you will not understand anything from it. But
in the end what he is saying will not hurt you. Do not panic because today we
are going to provide information about the same technical specification, Cores,
CPU itself.
In the
market every 6 months, you will see CPU with new processor. It is also
difficult for new users, they should choose a processor from the cone if they
are buying a new system. Because according to your work you have a requirement.
In such a
situation, if you have to do basic work then you do not have any need to get
more advanced CPU. Because for such tasks your normal CPU can also do that work
comfortably and you will not have to spend much money. But due to lack of
correct information, people always get enticed by shopkeepers and buy more expensive
CPU which they never need.
So today I
thought why not give you the right information about what is the central
processing unit and how it works so that you will be able to choose the right
CPU. Then without delay, let's start and know about what the CPU.
Topic
sequence
- What is CPU ?
- What is the full form of CPU?
- CPU Functions
- How does cpu work
- Information about CPU parts
- Types of CPU
- How important are CPUs?
- What are CPU Cores and how many Cores are there in CPU?
- What is Hyper Threading?
- What is multithreading?
- Intel Core i3 vs. i5 vs. i7
- What does the CPU look like and where is it located?
- What is CPU Advantages
- Definition of cpu
- CPU architecture
- Frequently asked questions
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 the 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. It is only with the help of transistors
that all calculations are done that 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
such as 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 by the name of 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.
We know CPU
by many names such as processor, central processor, or microprocessor etc.
Day It
receives whatever instructions it receives from its software and hardware, no
matter how small it is, it processes it. Therefore, it is a very major part of
the computer.
In the
advancements in CPU technology, one thing is given more importance in how the
transistors can be reduced and reduced. This is because with this, those CPUs
can be made more efficient and their speed can be increased by several times.
For the
first time, a scientist whose name is Moore, said this thing. Hence this thing
is also called Moore’s Law.
What is the
full form of CPU?
The full
form of CPU is Central Processing Unit. If you translate it to Hindi then it is
"Central Processing Unit".
What is CPU and how does it work?
CPU
Functions
So let's
know about some important features of Central Processing Unit (CPU)
The CPU is
considered to be the brain of the computer.
The CPU
performs all types of data processing operations.
It stores
data, intermediate results, and instructions (program).
With this,
it controls all the operations of all parts of the computer.
How does
cpu work ?
You need to
know what CPU works. 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 the 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 that series
of numbers which are 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 is 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.
Execute
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.
Information
about CPU parts
CPU Parts
Here, we
will know what are the components of CPU and what work they do. By the way,
there are three main components of CPU.
Memory or
Storage Unit
Control unit
ALU (Arithmetic
Logic Unit)
Memory or
Storage Unit
These store
the instructions, data, and intermediate results of the unit system. These
units also provide information to all other units as and when required. It is
also called internal storage unit or main memory or primary storage or Random
Access Memory (RAM).
Its size
affects its speed, power, and capability. Primary memory and secondary memory
are two such memories which are important in the computer.
What are
the functions of memory unit
It stores
all the data and instructions needed for processing.
It stores
all intermediate results of processing.
It stores
the final results of processing when they are not released in the output device
even when they are released in the output device.
All inputs
and outputs are transmitted by main memory.
Control
unit
These units
control the operations of all parts of the computer but they do not perform any
actual data processing operations.
What are
the functions of Control Unit
It is used
to control the transfers of data and instructions that are used to transfer
other units of the computer.
This is done
to manage and coordinate all the units of the computer.
It receives
instructions from memory, interprets them, and is used to direct those
operations to the computer.
It
communicates with Input / Output devices for data transfer and for results from
storage.
It does not
process anything nor does it store any data.
ALU
(Arithmetic Logic Unit)
This unit
consists of two subsections called key
Arithmetic
section
Logic section
Arithmetic
section
The function
of this arithmetic section is that all these perform arithmetic operations such
as addition, subtraction, multiplication, and division. All complex operations
are done by repetitive use of the operations mentioned above.
Logic
section
The main
function of this logic section is that it performs all these logic operations
like comparing, selecting, matching, and merging of data.
Types of
CPU
As we know
that computer CPU (called Central Processing Unit in short) is a very important
component that handles all instructions and calculations that are sent to it
from other computer's components and peripherals. The speed at which software
programs work depends on the CPU, how powerful they are.
So it is
important that you choose the right CPU so that they can handle all the tasks
as needed. Right now Intel and AMD are the two largest leading CPU
manufacturers in the world, who have their own types of CPUs.
Single Core
CPUs
Single core
CPUs are available in the oldest types of computer CPUs and these types of CPUs
were first used.
Single core
CPUs can only do one operation at a time, so they are not the right option for
multi-tasking. Whenever the user wants to run more than one application, then
their performance decreases very soon.
If you want
to run another application, then you will have to wait till the first one is
over. Otherwise the first operation will be very slow. In such type of CPUs,
the performance of the computer depends mostly on clock speeds and which is
also a measurement of power.
Dual Core
CPUs
A dual core
CPU is a single CPU but it has two cores and hence it functions like two CPUs.
Whereas in a
single core CPU, the processor has to switch back and forth to different sets
of data streams if more operation is to be done, while dual core CPUs can
handle multitasking with greater ease, that too efficiently.
To take
advantage of Dual Core, it is very important to have a special code written in
both the operating system and the programs that are running in it, which is
called SMT (simultaneous multi-threading technology). Dual core CPUs are faster
than single core but not like quad core CPUs.
Quad Core
CPUs
Quad core
CPUs are further refinement of multi-core CPU design and feature four cores in
a single CPU. As the workload in one of the dual core CPUs is split within the
two cores, the quad cores can perform even larger amounts of large multitasking
tasks. This does not mean that a single operation will be up to four times
faster.
This is
possible only with the SMT Code. Speed is not much noticeable in these CPUs.
But yes, if users who have to do many heavy tasks like video editing, games,
animations, etc. then these CPUs will definitely come in handy.
How
important are CPUs?
Like I have
already said how important CPU is for a computer. Since it is also called brain
of computer, you must have understood how important it is.
Since it is
solely responsible for executing commands within the program, the more CPU
capacity, the more quickly they can run their applications.
What are
CPU Cores and how many Cores are there in CPU?
Talking
about computing of earlier times, earlier there used to be single core in CPU.
This means that the CPU was limited to only a single set of tasks.
For this
reason only, the speed of computing was very low in earlier computers and they
used to spend more time to work.
But due to
the requirement of more computing power over time, manufacturers had to adopt
new methods to increase performance. And while improving this performance,
multi-core processors were born. Which we are currently hearing about dual,
quad, and octa-core CPUs.
Dual Core Processor: In a dual-core processor, two
separate CPUs are connected in a single chip. By increasing the number of
cores, CPUs are able to handle multiple processes simultaneously.
This gives
manufacturers a CPU with more performance and less processing time as per their
requirements.
With the
advent of dual-core, these further quad-core processors which have four CPUs,
are helpful in developing them. Likewise octo-core processors.
What is
Hyper Threading?
Some CPUs
virtualize their current physical core and cause a loss of more cores. This
process is called Hyper Threading. For example, use single core to virtualize
it as dual cores. With this, dual cores can be made work despite being single
core.
Virtualizing
means that a CPU with a core is present but starts to function like a dual
core. Additional cores here mean having separate threads. But here it should be
known that physical core perform much better than virtual cores.
What is
multithreading?
The thread
here is treated as cores. Suppose you can consider a single thread as a single
piece of computer process. Multithreading means that
Processing
more threads at once.
Meaning that
more number of instructions are understood and processed in a single CPU at the
same time. This allows CPU core to process more work at the same time. Which
greatly increases the computing speed.
Intel Core
i3 vs. i5 vs. i7
Let's know
about the different CPUs of Intel. How do these processors work? You must be
thinking that Intel's i7 processor performs better than i5 and i3. And this is
also true. Because i7 is much better than i5 and i5 is better than i3.
But do you
know why this processor is different from each other and different from each
other in terms of performance. But it is easy to understand, let's know about
it.
Intel Core
i3 processors are dual-core processors, while i5 and i7 processors are
quad-core.
With
features like Turbo Boost, the i5 and i7 chips work much better. This turbo
boost enables this processor to help increase its clock speed more than the
base speed, such as from 3.0 GHz to 3.5 GHz, whenever they need it. But Intel
Core i3 chips do not have these features.
Processor
models that have "K" written at the end can be easily overclocked,
which means that the extra clock speed can be forced and utilized at the time
of need.
Hyper-Threading,
as I have already mentioned about this, enables two threads to process each CPU
core simultaneously. This means that four simultaneous threads (since they are
dual-core processors) can be processed simultaneously in the i3 processors
which supports Hyper-Threading.
While Intel
Core i5 processors do not support Hyper-Threading, it means that they can also
work with four threads at the same time. Same i7 processors but support this
technology (since it is quad-core) so they can process 8 threads at a time.
Because many
devices have power constraints in which there is no continuous supply of power,
all the processors be it i3, i5, or i7, they have to balance their performance
and power consumption.
What does
the CPU look like and where is it located?
A modern CPU
is usually small and square in shape, with many short, rounded, metallic
connectors on the bottom. But some older CPUs have pins in place of metallic
connectors.
CPUs
directly attach with the CPU "socket" (or sometimes a
"slot") which is located in the motherboard. The CPU is inserted into
the socket pin-side-down, and a small lever helps secure that processor.
Since the
CPU has to do many processes at once, these modern CPUs get hot most of the
time due to some time run. So to remove this heat, it is important to attach a
heat sink and a fan directly to the top of the CPU. Typically, it comes bundled
with CPU that you must buy.
Talk about
other advanced cooling options, you can use water cooling kits. While
installing these CPU, take special care of them because its pins are very
sophisticated.
What is CPU
Clock Speed?
The clock
speed of any processor is called that where a processor can process how many
number of instructions in a second. It is measured in gigahertz (GHz).
For example,
if the clock speed of a CPU is 1 Hz then it means that it processes the same
instruction in a second. Similarly, if the clock speed of a CPU is 3.0 GHz then
it can process 3 billion instructions in a second.
What is CPU
Advantages
By the way,
a computer has many advantages in a computer. But here we will talk about only
a few advantages.
Fast
Calculation of Mathematical Data
The primary
advantage of a Computer Processor or CPU is that by this you can fast calculate
mathematical data. This is a very important reason why computers are ahead of
humans in some tasks, for example Mathematical modeling.
On the basis
of this fast calculation of mathematical data, many tasks can be done in the
computer, such as video game, photo editing etc.
A Dynamic
Circuit
A modern
computer processor is basically a dynamic circuit. There are tens of millions
of tiny switches called transistors. Other components of the processor control
the configuration of these tiny switches according to their input data or from
the active application.
This tiny
switch produces large and complex dynamic circuits, such as printed circuit
board (PCB) in electronics. Similarly, a computer can emulate the function of
other electronics.
Basic
Computer Functionality
A primary
basis of any computer is a processor. All other hardware components are built
according to the processor. Without this, the rest of the computer's hardware
and software is absolutely pointless.
All input
and output peripherals completely depend on the processor itself and for input
and output of data. Because only through this processor the input data is
processed and reaches the output. This processor is where the computer computes
anything.
Definition
of CPU ?
In all the
computers that you can see in your office, you have a very important thing in
it, which is called Central Processing Unit, or CPU. This CPU processes all
kinds of arithmetic and logical decisions in the speed of billions of
operations per second.
Most of the
components of the computer serve the CPU and fetch the data, store it and
finally display the results in the screen. So let's have a look at some of its
functions.
Calculations
A CPU
performs all basic arithmetic such as addition, subtraction, multiplication and
division at very high speeds. Since complex math functions have simple
arithmetic of long chains, your computer can also fast these trigonometry,
logarithms and other tough math problems.
For example,
your computer's CPU can calculate hundreds of spreadsheet cells in a fraction
of a second.
Logic
The CPU
makes many logic decisions based on simple comparisons, such as greater-than
condition, less-than condition and equal-to condition. Then according to the
outcome of the CPU comparison takes its action.
Moving data
The CPU
spends a lot of its time moving data from one place to another. For example, to
read (read) a file from hard drive, calculate something in the data and later
write it to another file.
Multitasking
The CPU can
easily do "multitasks," for which it has to switch to different types
of programs. And work has to be done according to priroty. This makes full use
of CPU memory. With multitasking, many tasks can run simultaneously parallelly
without any task being closed.
CPU
architecture
As
advancement in technology is taking place. In the same way, there will be many
such advancements in CPU, such as the use of superconductor graphene in place
of silicon or in conjunction with it.
The size of
CPU is gradually decreasing every year. Like the latest generation of Intel
architecture has been manufactured in 22 nanometers (nm = 1 billionth of a
meter). It is heard that the next-generation CPU is going to be even less at
14nm.
Due to its
small power consumption can also be reduced and extra cores can also be added
to the CPU, this can also keep Moore’s law intact.
Gradually,
this size is constantly being reduced. But whatever it becomes small, it will
be larger than the size of the atom of Silicon, because it cannot be smaller
than that. Then it is indicating that something new can be used in place of
Silicon soon.
Maybe that
thing is graphene? Because it is very small size. Extremely thin, is one of the
thinnest known materials. This will definitely help the scientists in reducing
the size of CPU. IBM has reported that they have developed a graphene
"transistor" that can also work at 300GHz.
The way
technology is being used, it is clear that Graphene CPU usage can be seen in
the CPU industry very soon. Only time will tell what changes are coming in the
CPU.
Frequently
asked questions
1.
How to connect 1Led to CPU?
You can use
male-to-male HDMI cable to connect A - Led Tv with CPU. For this, you have to
change the input of Tv from remote. Then you have to make some changes in the
display settings of the computer. By doing this you can easily connect LED Tv
to CPU.
2 Which is the best CPU?
A - There
are many CPUs in the market. Here I have mentioned some CPU names which are the
best.
1 - Intel®
Core ™ i5-8600
2 - AMD
Ryzen 5 1600
3 - AMD
Ryzen 5 2600X
4 - Intel®
Core ™ i5-8600K Desktop Processor
5 - Intel®
Core ™ i7-8700K Desktop Processor
3CPU runs on
AC or DC?
A - DC
current is used to run the CPU.
3-Who invented Cpu and when?
A - The
basic architecture of CPU was designed by Marcian Edward "Ted" Hoff.
And using this same architecture, Federico Faggin was the first to build a CPU
(Microprocessor). It was named Intel 4004. It was built in 1971.
This CPU
used 4 bit architecture, meaning that such data is processed which is of 4 bit
length, and it had 256 bytes of Read Only Memory (ROM), 32 bit RAM and one 10
bit shift register.
This CPU
used 2,300 transistors, which could do about 60,000 operations per second. Its
maximum operating frequency was 740 KHz.
4-Which was
the first processor to come?
A - The
first processor of Intel 4004 came in 1971.
61 What is
the process of connecting multiple computers to a CPU?
You can use
ASTER multi monitor software to connect A - 1 CPU to many computers. This is a
third party software.
5-What is the difference between 7CPU
and Operating System?
A - Both of
these
The main
difference is that the CPU is a hardware and the Operating System is a
software. That means the operating system is used to operate the CPU. For
example Windows XP, Windows 10.
6-How to identify 832 bit and 64 bit
processor?
A - To
identify the processor of your computer, you have to right click on the
computer. Then properties have to be selected. In this, you will know about the
processor whether it is 32 bit or 64 bit.
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