Welcome to our new lecture
In last lecture we talked about mother board and in mother
board one thing which you saw was port you can see
different types of port here I would like to show you again
that here different different sizes of different different
working is there you can
see these ports so exactly these ports or cabinet which you
have there you can see port what is their work and how they
become important for us so we will understand that we will
take some reference of notes and then we will see how they
work and what
are the ports available so let's see the ports you have
already seen on mother board that they are already
integrated now we will see what are the definitions on
white board and how they work so first of all here you can
see written computer ports so
we are going to study about computer ports and here what is
a port so first of all definition what is a port ok what is
their work that is later what is it you can see some things
are there this is called port so what is the definition of
port so here
you can see a port is a physical docking point means you
can touch it it is a docking point which is used with an
external device which external device can be connected to
the computer what does it mean it is a physical point you
can touch it you can
touch it it is a docking point docking means when you
connect something that is a docking point so here it is a
physical point where you can connect an external device to
the computer what can be that external device that external
device can be your keyboard
that external device can be your mouse that external device
can be your hard disk that external device can be your
speaker means different types of things can be there if you
want to connect to the internet then you need a LAN cable
for LAN cable we need
a port in which we can connect the LAN cable so are you
able to understand this thing that how important your ports
are if you don't have any port like my new one thing I will
tell you what you have to do when you go to buy a laptop
you have to correct
the mistake I did
I didn't pay attention whether there is a LAN cable port or
not
I paid attention to USB that there are 3 USB ports because
you need USB ports the most so you count that
I need more ports if I get 4 ports then I can work in all 4
ports but I didn't pay attention whether there is a LAN
cable port or not but recently after so many years because
I didn't need it because how do I connect my internet
I connect it through WIFI so I connect it wirelessly now I
felt that if your internet connection doesn't work then
what will you do there you have to connect LAN cable for
that you should have an ethernet port so I took out the LAN
cable from another
cabinet and when I started connecting
I realized that I made a mistake that I didn't see the LAN
cable port whether there is a LAN cable port or not
I just saw that this computer is being offered so you have
to remember that according to your requirement there should
be a LAN cable port otherwise there will be no use of
buying although you can do it through USB that the LAN
cable port will come then
you will connect it through USB then you will connect it
through LAN cable if you get the LAN cable port before then
what is the problem so here is the same thing that there is
a physical docking point you can connect your external
devices on this docking
point next thing what is written can also be programmatic
docking point what does it mean that has this docking point
been programmed before this is the docking point through
which information flows from a program to computer or over
the internet means
one is your physical docking point as we have seen here
that this is my physical docking point the other can be
programmatic docking point means this is the physical
docking point the other is the programmatic docking point
now what will the programmatic
docking point do it will do that your information will flow
from a program to computer or over the internet so you will
know that my ports are of two types first is my physical
docking point second is my programmatic docking point
second is my programmatic
docking point so you can write it well so what we
understood that our port is physical ok so I wrote here
physical after that I got to know that my second one is
programmatic so I write here programmatic docking point so
till now we understood now let's
talk about its characteristics what are the features you
get to see in the port port has following characteristics
let's see what are the characteristics external devices are
connected to a computer using cables and ports so if you
want to connect any
external device so what comes with external device cable
comes like if I talk about keyboard so what you get to see
with keyboard you get to see a cable with keyboard you put
that cable in any port so here the same thing is written
that external devices
are connected to a computer you can connect external
devices like hard disk you get a wire with hard disk you
get a cable you can put that cable in any port so external
devices are connected to computer using cables and ports
and what is this cable this
cable is connected to external device and you connect that
cable to any port so this is the first feature second
feature is ports are slots on the motherboard into which a
cable of external device is plugged in ports are slots so
this is my motherboard
on this motherboard slots are given different slots are
given what you can do you can put cable in this you can put
cable of any external device as I try to connect give me a
minute give me a minute
I have to remove it
I will show you what I am talking which you will understand
one second
I have removed it most probably so we remove it give me a
minute so I can show you how things are connected on
motherboard see this is my mouse what is mouse? this is
also an external device cable is connected to this device
see this is complete and what
is given to me in this cable see this is given to me to
attach in socket so we try to connect motherboard to
motherboard see this is motherboard see this is ports so we
try to connect to desktop if you can connect than we can
solve problem we can understand
so we try to connect if you can see here in a port my
external device is connected this is plugged in this is
what is written lets reconnect it ok so this is what is
written example of external device attached via port or
mouse
Connecting to a wireless or wired microphone
I have put their images also
HDMI port
Other than this
S-Video Earlier TV used to have round port like this
You used to connect your lead in one video and other in
other audio
So you used to see this type of port
VGA port
You used to see this type of port
Now if I talk about USB port
You used to see different types of ports in USB
You used to see this type of port
You used to see eSATA port
PCMCIA or Cardbus
You used to see this type of port
Now you can see
IES power connectors
You used to see different types of ports to connect power
After that Ethernet port
This is the most important thing
I didn't pay attention to this port
RJ45 I couldn't connect LAN cable
This is your RJ11 modem
So you can see this type of port on motherboard
Let's talk about this type of port
You can see different types of ports
Other than this
You can see games port
There are many types of ports
There are other ports
The following are few important types of ports all the
images you have seen from that in their names it is known
that if it is a serial port then it will look like this if
it is a parallel port then it will look like this if it is
a modem then it will
look like this now let's talk about them specifically what
all things you will get to see so let's go first comes
serial port let's see serial port it looks like this what
all things are written in serial port used for external
modems what is the use
of serial port if someone asks you do you know what is the
use of serial port in motherboard you will say that we know
it so external modems are used one is internal modem and
one is external modem so internal modem is you have
installed it after that
when we are talking about external modem if you want to
install external modem then what you have to do for that in
your laptop or computer what should be there serial port if
this port is not there then what will be the problem you
will not be able to
connect external modem and older computer mouse the mouse
which used to come for that how it was installed now I have
shown the mouse you can connect it through usb but earlier
you could not do like this earlier there was a separate
serial port you had
to connect the mouse in serial port you will get two
versions you will get one 25 pin model and one 25 pin model
if I talk about data travel speed then it is 11 kilobits
per second 115 kb now it is such a low number you can't
even think like today if
I talk about internet connection speed what is the speed of
data travel if I want to watch a movie from my computer and
here you have to put it in pen drive or computer to do this
if it is a 2 GB movie it will take 2 to 3 minutes we can
say that it is
transferring 100 Mbps data or if I talk about internet
connection when you download something from internet
connection it is done in a snap but here 115 kilobytes
I will tell you in 1 MB it is 1024 bytes 1 byte is equal to
8 bits it is like this and in 1 KB it is 1024 bytes and in
1 MB it is 1024 we will talk about it in the coming
lectures it means we are talking about 115 kilobytes 115
kilobytes and in 1 MB it
is 1024 kilobytes so you can think when we talk about 100
Mbps data so how slow it will be when 100 Mbps data is
transferred from one place to another so here we are
talking about 115 kilobytes if you want to transfer data
through port it will be in very
slow speed it can be a 2 GB movie it can take a whole night
that's why serial port is not that good
USB port transfer speed is better so I understood this
whatever was written about it let's move ahead parallel
port let's see parallel port what is written in parallel
port it is written used for scanners and printers parallel
port is used for scanners
and printers so you can use parallel port I brought
scanners from market
I want to connect it but I found out that there is no
parallel port so what should I do
I can't do it or if you want to connect printers then you
should use parallel port it is also called printer port it
is possible that you go to market and ask do you have
printer port you can also buy printer port USB to printer
port it is also called
printer port or if you see in motherboard it is not in my
motherboard there is no parallel port so you can find out
in this way or you can ask the seller whether it has
parallel port or not whether it has serial port or not
because my requirement is to
connect printer if there is no parallel port so you should
know this after that there is a 25 pin model as we read
serial port model is 9 pin model or 25 pin model what is
the model in this 25 pin model it is also called or 25 pin
model also known as
IEEE 1284 compliant centronic port it is a long name if you
ask the seller to give you this long port then he may not
give you now this can be used in exam that tell me which
port is this is there any other name for this so you can
say yes it is parallel
port
IEEE 1284 compliant centronic port it is a long name
PS or PS2 port why it is useful used for old computers
keyboard and mouse old computers means 2nd generation, 3rd
generation computers this port was used now you can't see
if you go to buy and ask whether it has PS or PS2 port they
will say are you mad
when it was used it is 10 years why you are using now
keyboard and mouse are wireless why you need wired so here
my old computer keyboard or mouse
I used to use
PS or PS2 port also called mouse port it was called printer
port someone asked you what is printer port you said
parallel port you said what is mouse port you said PS or
PS2 port so you have to remember this name what is next
most of the old computers
provide 2 PS2 ports means in old computers at least 2 PS2
ports means if you go to buy any laptop you will get 3 to 4
USB ports so we can say
PS2 port
USB port
USB port each for mouse and keyboard also known as IEEE1284
compliant centronic port you will say is it same
IEEE1284 compliant centronic port I will say yes it is same
both of them are called
IEEE1284 compliant centronic port next is USB one of the
most important in today's time USB port
USB port
USB port is type C so type C is better now let's talk about
full form of USB port universal serial bus what is it let's
read it can connect all kind of external USB device means
all kind of any kind of it can connect all external USB
device such as external
hard disk it can connect external hard disk
The printer will connect the mouse, the scanner will
connect the printer, the keyboard will connect the
keyboard, the mouse will connect the mouse, the scanner
will connect the printer, the mouse will connect the
computer.
It was introduced in 1997.
2 will come Data travel set 12MB per second Data travel set
12MB per second 12MB per second 12MB per second We got to
see 115 KB 115 KB
Which port you like to buy
If you go to the market
He will say that this is such a cheap computer
You will see that there is no good USB port
There is no USB port
There is a serial port
What is the speed of data travel in the serial port 115 KB
115 KB
MB MB is fast USB 2.0
USB 2.0
USB 2.0 USB 2.0
USB 2.0
USB 2.0 Now everything is being replaced by USB So you will
not get to see the game port separately You will get to see
the USB and the joystick cable It will also be USB cable
that can be connected directly to the socket Next thing is
Digital Video Interface
DVI Port
Now what is this DVI port? Connect Flat Panel LCD Monitor
That means you have to connect the LCD monitor to the
computer's high-end Video Graphic Card
If you want to connect to the computer's high-end Video
Graphic Card then you will have to use DVI port
It is very popular among Video Card Manufacturers
Next thing is Socket
Connect Microphone Speaker to Sound Card of the Computer
Sound Card is installed in a computer
Now you can connect the microphone to the computer or you
can connect the speaker to the computer
So you will get to see different types of ports
Let's quickly revise this
First we understood that there are two types of ports
One is physical port and the other is programmable port
Then we understood that these ports are like docking points
where you can connect your external devices
Then we understood that you can connect different types of
hardware whether it is a mouse, keyboard, monitor,
microphone or speaker
Then we saw some photos
You can see different types of ports
It depends on your requirement
You will go to buy a PC or Laptop which may have an
Ethernet port because you don't want to connect through
Wi-Fi or you don't want to connect through LAN cable
because there is a lot of interruption
If you like it, you will see whether the laptop you are
buying has an Ethernet port or not
Then we understood that there are two types of ports
Serial port has 9 pins and 25 pins but the data speed is
very low
Parallel port has 25 pins
IEEE 1284 compliant
PS2 port
PS2 port is used to connect old computers
USB port is the most popular port
USB port has a speed of 12 MB per second
VGA port is used to connect computer video cards
VGA port has a speed of 12 MB per second
Serial port has pins and holes
Power connector is used to power laptop
Firewire port is used to transfer high-speed data
Firewire port
Modem port
Ethernet port
Game port
Game port is used to connect USB ports
Game port
Digital video interface
DVI port
High-end video card
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