Telecommunication and Networking lesson 3

Selamun aleykum everyone J hi my dears J

Lets look what we did our in third lesson J

1-   computer networking

2-   the importance of networking

3-   data communication

4-   introduction to networking devices

5-   introduction to networking softwares

1.1                 How we can use computer networking?

-                we can communicate with computer by;

computer  devices

transmission media (control data/signals)

software / hardware

    

     2.1   how it’s working ?  Let’s look at by pictures J

Computer Networking 

   3.1 - which networking we use ? Let's look them by pictures :)


   LAN - Local Area Network                                       WAN - Wide Area Network 

MAN - Metropolitan Area Networking                        PAN - Personal Area networking 

4.1  networking devices ???

–Personal computers

–Terminals

–Workstations

–Computers

–Automatic teller machines

4.2 types of  transmission media

 - bounded and non-bounded media ( also knows as guide and non guide media) 

            4.3  Network electronic devices 

- -Bridges  - Concentrators

   - Routers  - Front End

   - Processors - Private Branch  

   - Switches Exchange (PBX)  - Hubs 

   - Multiplexers  - Gateways

          Firstly watch this video to understand clearly about what is Bridges Networking :) 

        

Know ! Let's look at differences between router,bridge and switches by this video :) ;

Thank you so much for reading my blog :) please keep contact see you next week :) 

Also ı found thıs website really it is usefull for understand clearly. :)

                   http://www.ask-the-computer-doc.com/computer-network-components.html

Telecommunication and Networking lesson 2

Telecommunication and Networking lesson 2

In the name of God; The most kindly merciful.

Hello everyone ! :) I am again here to tell about new news for my second lesson :)
This week our topic is about Data communication.

#1

What does mean Data communication ???

- Data communication means electronic transmission on digital area. Info can appear in ;

Examples

Computer, Radio station

Telephone handset, workstation

Radio waves, coaxial cable

Video, text

# 2
Type of signal
All this examples which I wrote above needs to signal to transfer data and there are two types of signal ;

Analogue signal appear with two feaures frequency(oftenness) and amplitude (violence).

Digital signal is tranmission of binary electrical (by 0 and 1). every digital signal needs to changed into Analogue signal for tranfer to PSTN line. there are two way two change them to each other :

• The process of changing ANALOGUE to DIGITAL signal = Modulation

• The process of changing DIGITAL to ANALOGUE signal = Demodulation

Also Hardware that used in computer to do this process =

• MoDem

Binary system

Bit (binary) are the smallet part in digital. they only has two statement, 0 and 1.

Data transmission mode

I draw this chart based on my understanding

Data transmission mode

For this two transmissions there must be two serial transmission mode;    Asynchronous = how long the transmitter leave(signal of the bits), examples;

• your computer use asynchronous serial communication with the keyboard and mouse
• The serial port is used to communicate with an external devices such as modems.we can think, asynchronous as a faster means of connecting, but less reliable when transmitting.

 Synchronous =   large group of data transmission. 

I hope this draft will help for understand clearly ;

#3 lets look at our last topic for lesson 2 

There are two types of duplex settings used for communications on an Ethernet network: half duplex and full duplex. The figure shows the two duplex settings available on modern network equipment. lets look at by picture to understand easily 

Introduction to Telecommunication - Lesson 1

Introduction to Telecommunication - Lesson 1

In the name of God; The most kindly merciful.

This is our first lesson on Telecommunication and Networking with Dr.Dayang.

I am going to write brief reflection for first lesson.

Let's look what was our topics :

1) What is communication?

- communication modes

2) What is Telecommunication?

3) Development of communications Technology

&computer technology.

- The elements of computer and communications technology

Now let's simply look at them !

# 1

I think this picture explain the meaning of communication in the easiest way

  

Also this funny short film can help to understand what is communication ;

Beside this picture explain what Dr. Dayang showed
us about communication models.

We can communicate with all living being in the world but
never we cannot get any communicate with mountains,

trees etc.Because communication always need a feed back.

 #2

Secondly she mention about the meaning of Telecommunication. As Dr.Dayang say;

Telecommuncation means over a long distance (tele=far off).

communications refers to the transfer of data (communications)

from a transmitter to a receiver across a distance.

Telecommunication ca appear by some form of electromagnetic energy,electricity

radio waves,lights, transmitted through medium wire, cable, atmosphere.

#3

Lastly lets look at the the elements of computer and communications technology.

They are six types;

                       o People

                       o Procedure

                       o Data/Information

                       o Hardware

                       o Software

                       o Communications/Connectivity

THANK YOU SO MUCK FOR READING

see you and keep contact :)