Hello and welcome to our new video This is the first video
of
Computer Fundamental Series
In this we are going to learn a lot of things that how this
computer works and what all things we will get to see in
this In this first video we will see the definition of
computer apart from this we will see some characteristics
of computer why we are
using computer why we are using computer apart from this we
will see what is block diagram of computer so we will try
to understand these three things one by one and we will
also try to give you real life examples and tell you things
so that you can relate
well so let's start this lecture first of all here a
definition is written you don't have to be scared of this
definition we have taken this as a reference that some
words are written we will try to understand those words
first of all let me show you
what all we are going to study so here first of all this is
the definition after this definition you will get to see
diagram of components of computer however we will go in
great detail and do components one by one in video but here
we will try to understand
what is the role of computer after this last block diagram
of computer we will try to understand this with real life
example so first of all we will start with definition of
computer so here you will see that computer is a electronic
machine that takes
input from the user user means me user means you so here
some words are there computer is an electronic machine so
first of all we will understand what is the meaning of
electronic machine that takes input what is the meaning of
this input from the user
process it the given input and generates output in the form
of useful information so what is the meaning of these lines
first of all we will try to understand so a computer is an
electronic machine so what is the meaning of this
electronic machine electronic
machine means any machine which is operated by electricity
so is computer the only machine which is operated by
electricity there is no other machine
I will say no you can call any other device which is
operated by electricity you can call it electronic device
for example
AC, Car because car is also a charging car other than this
it can be fan, light, washing machine refrigerator all
these things are operated by electricity so I understood
what I can call it
electronic machine
I have a ring light
I can call it electronic machine
I have a fan, I can call it electronic machine
I have a washing machine
I can call it electronic machine
I have a TV
I can call it electronic machine understood so in this way
computer is also an electronic machine because it is
operated by electricity after that next thing is that takes
input from the user what is the meaning of input it will
take input after that
it will process which input you will give and it will
generate output in the form of useful information let's try
to understand this suppose I have a refrigerator don't go
on my drawing it is very bad so what happened it became a
refrigerator ref-ri-z
what is the spelling ref-ri-z-r-a-t-e-r don't go on
spelling now what is the input or what is the process
I made a vegetable lentil, I ate a little after that I put
it in the fridge after that I put it in the fridge so the
thing I put in the fridge what happened means I am giving
input to my electronic machine what is the process what is
there to process
it is giving coolness it is preserving it it will not get
spoiled and what will the output give it will give coolness
what happened it became an electronic machine which takes
some input it does some processing on it and after that it
gives output what
can be the other example let's try to understand microwave
oven what is microwave oven what is it operated by it is
operated by electricity now if it is operated by
electricity then what will you say it is an electronic
machine so what do we have to do
in electronic machine we have to give input after that what
does it do it processes and gives output in microwave oven
what are you giving input
I have roti, it became cool
I have to heat it to heat it
I will put it in microwave oven after that I will set a
timer then what will it do it will show its magic it will
show its magic means it will heat the roti so what happened
to heating the roti to process it like refrigerator was
cooling the vegetable
so what to do to cool it to process it after processing it
gives output how did we keep the vegetable we kept normal
vegetable in refrigerator but after processing it gave us
cold vegetable as output
I had cold roti it was input
I kept it in microwave oven what did microwave oven do to
that cold roti what did microwave oven do it processed that
roti process means it heated it microwave oven has function
of heating after that it gave output so we gave input to
cold roti and it
heated it and gave output washing machine it runs on
electricity it became electronic machine what do you give
input we put clothes what does it give output it washes the
clothes this is what happens so I understood what is
electronic machine so we understood
what does computer do electronic machine computer is an
electronic machine in which you give input means I am a
user what did I say to computer you tell me 5 plus 5 5 plus
5 10 I write here what did I give in input
I gave 2 numbers 5 and 5
I told it to sum what did it process 5 plus 5 and what did
it give me in output it gave me 10 you will say sir you are
making me mad how am I making you mad you are making me mad
because
I can do this with calculator why did I need computer
I said yes you can do this with calculator but calculator
is not as fast as computer let's take one more example how
to calculate average suppose I have 5 numbers
I want to calculate average of these 5 numbers for average
what is step 1 step 1 is
I want to add 5 numbers
I sum them 1 plus 2 plus 3 plus 4 plus 5 after that in step
2 we will calculate average how to calculate average we
will sum them and divide by their digit how many digit
1,2,3,4,5 5 digit 1,2,3,4,5 15 digit
I divided by 5 and I got average of 3 so these are two
steps you will say I can do this with calculator can you do
this with calculator in one go have you seen any average
button on calculator
I have not seen it is possible but here I am talking about
two steps if you want to perform 10 steps what will you do
you will have to do 10 things in calculator you cannot do
10 things with one button you can do those things in
computer you will ask
how to do in computer you will do in computer through
programs there are many programming languages if you don't
know all my applications or software like my apps or my
software now we will see what is software but now generally
we try to understand Whatsapp
is an app
Whatsapp is an app
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I am talking about the height of any person 5 feet 8
inches, so I have these two things.
Now what happened?
Now this is an information, now this is an information,
what was it before this?
Before this, it was simple data.
Now see what is written in the next line, data refers to
the raw details.
What does raw details mean?
Tell me this, as we try to understand, data needs to be
processed to generate some useful information.
So what is here?
There is one thing, raw details, let's try to understand
this, after that, what is it?
Who needs to be processed, after being processed, what will
it bring us?
It will bring us useful information, so let's understand it.
You must have eaten tomato ketchup, so when you eat tomato
ketchup, what happens? Does it come in the bottle? Did it
come directly in the bottle? No, what happened first is
that the farmers went, broke the tomato and brought it,
that is, what is tomato?
Tomato is raw, that is, you cannot use it directly on your
own, that means you can say, but it is not complete, it is
not complete on its own, okay, you cannot do anything with
an empty tomato, you will put the tomato with some
vegetable, then a whole
vegetable is there, so what happened to our tomato, it
became raw, okay, it became raw, after that there is a
manufacturing company, like a farmer's company, so what did
he do?
That he has set up such a big factory, a machine is
installed in the factory, now what does that machine do?
That machine will take that tomato and after taking the
tomato, it will convert it into ketchup and ketchup will
reach us.
Now see what is in it, that machine is an electronic
machine, what did we give?
We gave it input, what did we give input?
We gave data, what is data?
Tomato, after that what did it give us output?
It gave information, what is the information?
That brother, this is tomato ketchup, okay, so that means
what did the machine do on the tomato? Processed things,
ground the tomato completely and what did it bring and give
us?
It brought us an output, so this is the meaning of this
line, after that we understand, program refers to the set
of instructions, I told you, where we talk about programs,
what is that? Set of instructions means more than one step,
what do you have to
do in the first step?
In the first step, you have to sum things, what do you have
to do in the second step?
Whatever sum you get, you have to divide it by all the
numbers, so what happened?
Program refers to the set of instructions that can be
executed by the computer, now the computer will do this
thing in sequential or non-sequential manner, what does it
mean?
Either it can do one by one sequential, that first did this
thing, second did this thing or can do non-sequential, that
first did this thing, then did the thing of the fifth
number, then did the thing of the eighth number, then did
the thing of the tenth
number, can do like this too, after that user reply is the
input provided by the user in response to
a question asked by the computer, did you see on the
computer?
Like you went to give an exam, after giving the exam, when
you come back, what happens on the computer?
There is a feedback form, what happens in the feedback form?
That you have to give marks there, you have to tell that
the system that was given to you, is it right?
The people who were here, are they right?
How was the environment?
Is it right?
Did cheating happen here or not?
So what are all these things?
As a reply, what does the user do?
Reply gives, who gives?
Gives to the computer, the main task of a computer system
is to process, what is the main task?
Processing, that is, you will give input and what will it
give you by processing?
Will give output, process the given input of any type in an
efficient manner, therefore computer is also known by
various other names, like your name will be Chintu at home,
or it will be Muntu, so the same computer has different
names, such as what can
be called a computer?
Data processing unit, so if someone said that the data
processing unit, someone said
that, if I am sitting at home like this, I can either say
that bring water or I said, do one thing, bring H2O, what
is the meaning of H2O?
Water is there, its formula is there, what is the formula
of water?
H2O is there, so I said bring H2O, it has one more name, so
similarly here my computer is there, my friend came to me
and said, bring the data processing unit, I have to do
something, I said, what is this data processing unit, I
don't understand, data
processing unit means computer, it is simple, or data
processor, the next day he played smart, now
I got to know that data processing unit has one name, the
next day he came and said, bring the data processor, I
understood, okay, data processing unit means, the name of
the data processor is also the same, so I brought the
computer, and data processing
system, so these three names, in which something like data
and process is coming, whose name is this?
It is the name of the computer, so we understood it well,
that what is a computer?
It is an electronic machine, in which we do something like
this, which takes input from us and what does it give us?
It gives us the output, so these things are very clear to
us, now let's go ahead, let's
see what things we will get to see, so what is below, let's
go to the paragraph below and see what things we are
getting to see on it, see here, it is written, a computer
includes various devices that function as an integrated
system to perform several
tasks described above, these devices are, these are the
names of some devices, that is, a
computer is not alone in itself, if you have ever seen a
computer, then what happens?
Here is a monitor, okay, with that monitor, monitor means
screen, what happens with the screen? A keyboard is
installed, what is installed with it?
A mouse is installed, okay, so this is my mouse, so I write
here mouse, like here also you can see this thing, okay, so
what happened to me?
This is my computer, this computer has become my screen,
which I call monitor, what is attached to it?
A keyboard is attached to it, a mouse is attached to it, a
CPU is attached to it, although it is not called CPU, it is
called cabinet, there is a small thing inside the cabinet,
which we call CPU, I will show you all these things, when
we will read about
CPU, how does the CPU look, you know how the monitor looks,
how does the screen look, if I increase the screen of your
mobile, what will happen?
The computer screen will be made, or the TV screen in your
house will be of the same type, what will happen to you?
The monitor screen will be there, so here is the keyboard,
you must have seen the keyboard sometime or the other, how
it looks, you must have seen the mouse, what does it mean?
A computer includes various devices, what are these various
devices?
What is this device?
This device is a monitor, keyboard, mouse, CPU, there can
be more, that function as an integrated system, that means
all these work together, if they do not work together, then
it will not work, how will it not work?
I said that do one thing, you have to tell the computer to
do 5 plus 5, but we did not put the keyboard, now how will
you type without the keyboard, that is, it is necessary to
remove the keyboard, or I said that I removed the mouse, I
removed the mouse,
so how do
I take it now?
How do I take things to the next line?
Or I removed the CPU, what does the CPU do?
What have we been talking about so far?
There is a process, there is a process, there is a process,
what is this process?
Who does this process thing?
This does, CPU does, this is called Central Processing
Unit, now let's see that we have understood that what is
this whole?
This is the whole integrated system, so I write here
integrated system to perform several tasks, that is, they
do a lot of tasks together, what tasks can they do?
Can run any program, can run any software, I gave some
input, I gave 10 numbers, sorry , can give output as
output, so they do a lot of tasks, which is written below,
these are the names of the devices, like what is the first
one?
Central Processing Unit, CPU, let me show you once, ok,
CPU, Monitor, Keyboard and
Mouse, I show you all these things, so that we can process
further, so I minimize it a
little bit, and we go to Chrome, I wrote here on Chrome,
Monitor, so I showed the monitor, what do I have?
I have monitors of different types, let's go to the images
and see, I have monitors, ok, I understood this, now I saw
that there is a lot of work to be done.
This chip does everything by itself, like you have seen the
movie Robot, in which the chip of letter is changed, so
what does it do, it destroys the whole city, so this chip
does everything by itself, so this chip does everything by
itself, so what does
it do, it destroys the whole city, so what does it do, it
destroys
the whole
city, so
what does it do, it destroys
the whole city, so what does it do, it destroys the whole
city, so
what does
it do, it
destroys the whole city,
so what does it do, it destroys the whole city, so what
does it do,
it destroys
the whole
city, so what does
it do, it destroys the whole city, so what does it do, it
destroys
the whole
city, so
what does it do, it destroys
the whole city, so what does it do, it destroys the whole
city, so
what does
it do, it
destroys the whole city,
so what does it do, it destroys the whole city, so what
does it do,
it destroys
the whole
city, so what does
it do, it destroys the whole city, so what does it do, it
destroys
the whole
city, so
what does it do, it destroys
the whole city, so what does it do, it destroys the whole
city, so
what does
it do, it
destroys the whole city,
so what does it do, it destroys the whole city, so what
does it do,
it destroys
the whole
city, so what does
it do, it destroys the whole city, so what does it do, it
destroys
the whole
city, so
what does it do, it destroys
the whole city, so what does it do, it destroys the whole
city, so
what does
it do, it
destroys the whole city,
so what does it do, it destroys the whole city, so what
does it do,
it destroys
the whole
city, so what does
it do, it destroys the whole city, so what does it do, it
destroys
the whole
city, so
what does it do, it destroys
the whole city, so what does it do, it destroys the whole
city, so
what does
it do, it
destroys the whole city,
so what does it do, it destroys the whole city, so what
does it do,
it destroys
the whole
city, so what does
it do, it destroys the whole city, so what does it do, it
destroys
the whole
city, so
what does it do, it destroys
the whole city, so what does it do, it destroys the whole
city, so
what does
it do, it
destroys the whole city,
so what does it do, it destroys the whole city, so what
does it do,
it destroys
the whole
city, so what does
it do, it destroys the whole city, so what does it do, it
destroys
the whole
city, so
what does it do, it destroys
the whole city, so what does it do, it destroys the whole
city, so
what does
it do, it
destroys the whole city,
so what does it do, it destroys the whole city, so what
does it do,
it destroys
the whole
city, so what does
it do, it destroys the whole city, so what does it do, it
destroys
the whole
city, so
what does it do, it destroys
the whole city, so what does it do, it destroys the whole
city, so
what does
it do, it
destroys the whole city,
so what does it do, it destroys the whole city, so what
does it do,
it destroys
the whole
city, so what does
it do, it destroys the whole city, so what does it do, it
destroys
the whole
city, so
what does it do, it destroys
the whole city, so what does it do, it destroys the whole
city, so
what does
it do, it
destroys the whole city,
so what does it do, it destroys the whole city, so what
does it do,
it destroys
the whole
city, so what does
it do, it destroys the whole city, so what does it do, it
destroys
the whole
city, so
what does it do, it destroys
in many different formats in different formats as a video
also stored as a image also stored as a pdf file also
stored the storage area of a computer system is generally
divided into two categories and this storage is divided
into two categories one is
main memory and one is secondary memory now this thing main
memory vs secondary memory main memory vs secondary memory
main memory vs secondary
memory main memory vs
secondary memory main
memory vs secondary memory main memory vs secondary memory
main memory vs secondary
memory main memory vs
secondary memory main
memory vs secondary memory
main memory vs secondary memory main memory vs secondary
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secondary memory main
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you will blame refrigerator for doing wrong thing but you
will say it was my fault because I gave wrong vegetable in
it so how I got vegetable, I will get bad so it is called
garbage in garbage out after that computer is a dumb
machine it doesn't know
anything it is dumb it is so dumb that it will do whatever
we say it will not use its brain like we said like a kid
kid doesn't know anything kid doesn't know what is fire we
can burn with fire we told kid sometimes kids catch snake
they don't get scared
because they don't know so it is so dumb
I didn't say kids are dumb but this machine is so dumb that
it doesn't know anything therefore lacks common sense it
doesn't have common sense how it doesn't have common sense
we have common sense how we have common sense if vehicle is
moving on road
we should wait for red light after vehicle stop, we should
cross the road but if you make it stand it doesn't have
brain it will go so it doesn't have common sense anything
it does it is a result of human instructions means whatever
instruction it will
give it will do if it will give wrong instruction it will
do wrong what happened in robot movie it changed the chip
what was written in that chip go destroy the city so wrong
instruction was given that's why result was wrong if wrong
instruction was given
it will destroy the city so avoid giving wrong instruction
it carries out instruction as long as it can understand
them means it carries out instruction as long as it can
understand no matter whether they are right or wrong it
doesn't know what is right
or wrong whatever you will tell it is right or wrong so you
have to see this although computers can be instructed to
make certain decisions based on mathematical and logical
equations on the basis of these equations you can get some
results you can get
some output you can get as it happens in computer you must
have seen many times how can we say like we have dice what
can dice do it can generate random numbers like 1,2 or if
you have seen marvel movie what was in marvel movie
Avengers infinity war what happened in Avengers infinity
war doctor strange saw so many possibilities saw so many
possibilities that this can be this this can be this so
what it will do it will see the possibilities it will see
the possibilities it will
see the possibilities it will see the possibilities they
can not make decisions in situation where qualitative
consideration one second let me move it up qualitative
consideration are involved means where it comes qualitative
it doesn't know it becomes
dumb so I understood that what is the definition of
computer what is the definition of computer computer is an
electronic machine which takes input and gives output we
have seen many examples of electronic machine which runs on
electricity it is called
electronic machine after that we have seen that computer is
not alone machine with computer many things are attached
with computer monitor is attached with computer CPU is
attached with computer mouse is attached all these are
integrated all these are
integrated they work together it can't work alone we
understood that
CPU is very important after that we have seen some
characteristics some characteristics it gives a lot of
speed it can do things with speed after that we have seen
storage capacity storage capacity it can store different
things different formats after
that we have seen accuracy accuracy accuracy accuracy
versatility versatility
versatility versatility versatility versatility versatility
versatility versatility versatility versatility versatility
software
hardware hardware hardware hardware hardware hardware
hardware hardware hardware
I'll make sure to
spread the word to all my friends.