Presentation telephone, waired and wireless communicationPresentation Transcript
IT Project Presented by Abhishek Krishnakumar Rane
History of the telephone
In the 1870s, two inventors Elisha Gray and Alexander Graham Bell both independently designed devices that could transmit speech electrically (the telephone).
How the Telephone Works
When a person speaks into a telephone, the sound waves created by his voice enter the mouthpiece. An electric current carries the sound to the telephone of the person he is talking to. A telephone has two main parts: (1) the transmitter and (2) the receiver.
You are able to communicate with anyone in the world (as long as you have the number and the country's state code) at any time. It allows you to keep in contact with them and know how they are.
history of the internet
The birth of the internet can be traced to a small govt. project of the united states of America in 1970s.
Advanced research projects agency (ARPA) called ARPANET.
ARPANET had several computers called interfaced massage processors. Which are connected through modems and leased lines.
The major growth of the internet came with the development of HTML (Hyper Text Markup Language).
World Wide Web (www).
advantages and disadvantages of the wired internet
The networks tied with wire are great to use when you have the space and the capacity to work cables of the network through your house. In exchange for this effort you obtain a safe and reliable network with good data transfer rates. This means that you will be able to send the information from a computer quickly another one.
Another badly aspect of having wires is that each machine must have a wire working. This can be acceptable when you can far have the wires hidden in the dormitory or the office but what if you wish to use your portable computer in means of your kitchen or living room.
wires that work through floor that causes potential dangers of the trip among other things?
A cordless telephone or portable telephone is a telephone with a wireless handset that communicates via radio waves with a base station connected to a fixed telephone line, usually within a limited range of its base station (which has the handset cradle). The base station is on the subscriber premises, and attaches to the telephone network the same way a corded telephone does.