Hello and welcome to our new video.
In this lecture we will primarily talk about input devices.
Input device means when you are asked about input and
output devices we don't remember most of the names.
What do we remember most of the names?
We remember most of the names like keyboard, screen and and
and and that's all we know.
So in the name of input and output devices we mostly know
that keyboard and monitor are there.
So today we are going to understand 7, 8, 9, 10 input
devices what are the things in them and where are they used.
And next time when someone asks you you will be capable to
answer keyboard is there, light pen is there, speaker is
there
No, speaker is not there.
Speaker is the output device.
If you can answer all these things let's start this lecture
and see what are our input devices.
So for this I will open my white board and let's go here.
Here are input devices.
Let's talk about input devices.
So let's start.
Following are few of the important input devices which are
used in a computer.
That means there are many input devices in a computer which
are used by us.
What are they? Let's see their names.
First is keyboard.
Mouse, Joystick, Light pen, Trackball, Scanner, Graphic
tablet, Microphone, Magnetic ink card reader, OCR, optical
character reader, Barcode reader and last is optical mark
reader.
So all these are input devices.
Now what is the meaning of input devices?
Input devices means to take data as an input.
What does it mean?
If there is no input, then you will not see the output.
Your processing is on the input data.
So input devices help.
How they help? Please explain this.
Let's assume that Let's talk about input devices along with
input data.
What happens in input devices?
Let's take example of washing machine.
Washing machine works as input device and output device.
How does it work?
First of all, you put data.
What happens to your data?
Dirty clothes become data.
What happens to output?
Output becomes clean clothes.
Input as a clothes
There are two different sections in washing machine.
One section is to wash your clothes.
So washing machine's washing section is the input device.
What does it do?
It takes your clothes, takes your data and performs as an
input device.
So it becomes input device.
What is a keyboard?
We will try to show you an image of everything.
So that you know how it looks and what it does.
Let's see keyboard first.
Almost everyone knows keyboard.
I don't know.
Nobody knows.
If he has never seen these things, I can say that he
doesn't know.
But almost everyone knows how our keyboard looks.
Let me show you keyboard.
This is my keyboard.
I can also show you mouse.
This is my keyboard.
This is my mouse.
I am using both of them.
I am using them as input device.
Let's talk about keyboard.
Keyboard is the most common and very popular input device.
Before starting the video,
I said that when we are asked to tell about input device,
we remember most of the names.
We remember keyboard most of the time.
We remember mouse most of the time.
Why is it so?
Because it is very popular.
It helps in inputting data to the computer.
It takes data as an input in the computer.
The layout of the keyboard is like that of traditional
typewriter.
Have you seen traditional typewriter?
If not, then I suggest you to go to the district court.
When you go there, you will see people sitting with
typewriter.
People sit with typewriter.
People type with typewriter.
Keyboard is like that of traditional typewriter.
Keyboard is like that of
Keyboard is like that of typing keys typing keys typing
keys typing keys typing keys typing keys typing keys typing
keys typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys typing keys typing keys typing keys
typing keys
typing keys typing keys
pointing device which is used to move cursor position on a
monitor screen.
It is a stick having a spherical ball and it's both lower
and upper ends.
The lower spherical ball moves in a socket and the joystick
can be moved in all four directions.
It is mainly used in computer-aided design and CAD software.
Although you can use it as a mouse, it is not as convenient
as a mouse, so we are trying to use it where it is used.
It is used to select a displayed menu item and draw
pictures on the monitor screen.
It is used to select a displayed menu item and draw
pictures on the monitor screen.
It is used to select a displayed menu item and draw
pictures on the monitor screen.
It consists of a photo shell and an optical system placed
in a small tube.
When the tip of a light pen is moved over the monitor
screen, it is used to detect the screen location and sends
the corresponding signal to the CPU.
It is used to select a displayed menu item and draw
pictures on the monitor screen.
It is used to select a displayed menu item and draw
pictures on the monitor screen.
It is used to select a displayed menu item and draw
pictures on the monitor screen.
It is used to select a displayed menu item and draw
pictures on the monitor screen.
It is used to select a displayed menu item and draw
pictures on the monitor screen.
you pass a This is my friend this is my uncle. So I scanned
him with my eye.
Now I went to some new place.
So I found my uncle.
And my eyes told me that uncle is same as my friend.
So what does photocopy machine do?
It scans.
So here some definition is written.
Let's read it once.
These images can be edited before they are printed.
What can you do before printing them?
You can edit them before printing them.
That I want this word, I don't want this word.
So, what is this? It is a scanner.
And how does your scanner look?
Your scanner looks like this.
Let's talk about the next thing.
What is the next thing?
Digitizer What is digitizer?
We are hearing digitizer for the first time.
Digitizer converts graphics & pictorial data into binary
inputs.
That is a graphical tablet, blah, blah, blah, blah, blah.
What does this mean?
This means that my electronic machine understands only one
language.
That is a binary language i.e. 0, 1, 0, 1, 0, 1.
The graphic tablet that I have,
Which I am calling a digitizer.
I drew a picture on that digitizer.
to input sound that is then stored in digital form.
The microphone is used for various applications like adding
sound to a multimedia presentation
or recording a video.
The next thing is Magnetic Ink Card Reader or MICR.
What does it mean?
It means MICR input device is generally used in bank.
Because of a large number of cheques to be processed
everyday.
The bank's code number and cheque number are printed on the
cheques with a special type of ink that contains particles
of magnetic material that are machine readable.
Let's take a look at the bank's cheque.
Bank cheque
The main advantage of MICR is that it is fast and less
error prone.
You must have seen machines in banks which count notes.
It is possible that humans make a mistake by counting one
note twice and get happy.
OCR is an input device used to read a printed text.
OCR scans text optically character by character, converts
them into a machine-readable code, and converts them into a
machine-readable code, OCR scans text optically character
by character, converts them into a machine-readable code,
OCR scans text optically
character by character, converts them into a
machine-readable code, OCR scans text optically character
by character, converts them into a machine-readable code,
OCR scans text optically character by character, converts
them into a machine-readable code,
OCR scans text optically character by character, converts
them into a machine-readable code,
OCR scans text optically character by character, converts
them into a machine-readable code, OCR scans text optically
character by character, converts them into a
machine-readable code, OCR scans text optically character
by character, converts them into
a machine-readable code, OCR scans text optically character
by character, converts them into a machine-readable code,
OCR scans text optically character by character, converts
them into a machine-readable code, OCR scans text optically
character by character,
converts them into a machine-readable code, OCR scans text
optically character by character, converts them into a
machine-readable code, OCR scans text optically character
by character, converts them into a machine-readable code,
OCR scans text optically
character by character, converts them into a
machine-readable code, OCR scans text optically character
by character, converts them into a machine-readable code,
OCR scans text optically character by character, converts
them into a machine-readable code,
OCR scans text optically character by character, converts
them into a machine-readable code, OCR scans text optically
character by character, converts them into a
machine-readable code, OCR scans text optically character
by character, converts them into
a machine-readable code, OCR scans text optically character
by character, converts them into a machine-readable code,
OCR scans text optically character by character, converts
them into a machine-readable code, OCR scans text optically
character by character,
converts them into a machine-readable code,
OCR scans text optically character by character, converts
them into a machine-readable code,
OCR scans text optically character by character, converts
them into a machine-readable code,
OCR scans text optically character by character, converts
them into a machine-readable code,
OCR scans text optically character by character, converts
them into a machine-readable code, How to do a voice over?
How to do a voice over? How to do a voice over? How to do a
voice over? How to do a voice over? How to do a voice over?
How to do a voice over?
No, I haven't.
What's it about?
Basically, if you refer the Graduation BVOC program to your
friends and they sign up using your referral code, you'll
get some awesome rewards.
That sounds interesting.
For every friend you refer, you earn points that you can
redeem for discounts or even cash rewards and also get the
job guarantee after completing course.
Count me in.
I'll make sure to spread the word