The Invention of the Telephone and How It Has Changed Over the Years
About 100 years ago, Alexander Graham Bell invented the telephone by
accident with his assistant Mr. Watson. Over many years, the modern version of
the telephone makes the one that Bell invented look like a piece of junk.
Developments in tone dialing, call tracing, music on hold, and electronic
ringers have greatly changed the telephone.
This marvelous invention allows us to communicate with the entire globe
24 hours a day just by punching in a simple telephone number. It is the most
used piece of electronic apparatus in the world. It is probably one of the most
easy to use electronics available too. All you have to do is pick up the
receiver, listen for the tone, and then select a number using either tone or
pulsing dial.
A telephone can be separated into two main categories: there is the tone
(touch tone) or the older rotary dial (pulse) telephones. Then you can divide
those into other categories such as business line (multi -- line) or home line
(single line). You can also have many other types of phones: there are those
that hang on the wall, on the desk, etc.
THE HANDSET
No matter what kind of telephone you own, there has to be some device
that allows you to talk to and listen to. This device is called the handset. The
handset is usually made out of plastic and inside it are two main components:
the transmitter and the receiver.
THE TRANSMITTER
It is the job of the transmitter to turn the air pressure created by
your sound waves to electrical signals so they can be sent to the other
telephone. The waves hit a thin skin called the diaphragm that is physically
connected to a reservoir of carbon granules. When the pressure hits the
diaphragm, it shakes up the carbon granules. Then the carbon expands and
contracts, depending on what force is exerted. At two points on the outer shell
of the reservoir of the carbon are two outlets of electricity from the talk
battery. By applying voltage, a current is made and is passed along the lines to
the waiting telephone. At the other end the current is transformed back to
speech.
THE RECEIVER
The receiver turns an ever varying current back to speech. A permanently
magnetized soft iron core is covered in many turns of very fine wire. Through
the wire, the electrical c...
... middle of paper ...
...ed back to the number.
TELEPHONE CORDS
Older telephone lines were made of fork shaped piece of metal attached
to wires with a tool called the crimper. When installed, these wires were
screwed into the terminal box on the wall. This is really a pain in the rear end
because if you are going to fix the phone, you have to unscrew the box, then all
the screws. This process could last for hours at a time.
To make this job a lot easier, coiled cords and modular lines were
invented. To take out the handset or telephone, all you have to do is to unplug
the modular connector from its match and that is it. Modular cords can be bought
nearly in any electronics store.
There are three kinds of cords. One is the full modular cord. There are
small modular clips on both ends of the cord. The second is the one mentioned in
the first paragraph, this is called the spade -- lug cord. The third one is
called the 1/4 modular, this cord has one modular connector on one side and the
old fashioned spade -- lug end on the other. These 1/4 cords are not very common.
BIBLIOGRAPHY
BOOK: THE TALKING TELEPHONE AUTHOR: STEVE SOKOLOWSKI PUBLISHER: TAB BOOKS NOV.
1991
were connected to a motor and attached at the front end of the platform. These
telephone as a major constant business tool. This multi-line digital phone sets the new standard in easy
The two extreme close ups at the end of the shower scene are the plug
the fire they moved the rope back and forth so that the wood would get hot and start to burn.
What is a cell phone? When did the cell phone come out? Cell phones are electronic devices used for communicating. Engineer Martin Cooper was the first individual who made the first public cell phone in 1973 (Browning). Later on, the cell phone became the most important tool for our daily life in the modern world. Today society is a cell phone-controlled world, to some degree. Even though it is true that cell phones bring countless conveniences to people, the use of cell phones should be restricted. Despite their advantages as mapping and communication tools, they can cause accidents when used while driving, restrict driver’s attention which can cause safety concerns, and even lead to health problems.
the link are objects that stayed with the narrator throughout the story. On page 548 he
secured with a bobby pin. She would then finish the look by decorating it with a bow or colored
Gradually, features like voicemail were added, but the main purpose was talk. Eventually, cell phone companies began to realize that they could integrate other technologies into their phone and expand its features. The earliest smartphones let users access email, and use the phone as a fax machine, pager, and address book. James Katz, an information technologist and author of “Is Cell Phones a New Culture” , a article in the Popular Science magazine. This article’s mission to deliberate the original purpose of a mobile device. Katz explains “ ... To clarify, it isn 't a bad thing that cell phones have moved away from their original purpose, because with smartphones and the technology, they are able to do things that no one could ever dream of. Modern mobile phones all have e-mail, games, social media, movies, and messaging, all features that can be accessed but, cell phones original intent were to be able to communicate through voice remotely.” Taking this into consideration, cell phones don 't even serve that purpose , thanks to apps like GoSms, Instant Message,Snapchat,Facebook Messenger, Whatsapp and many more, people are not even utilizing their oral communication skills nearly as much as they should. Surveys reveal that 88% of teens prefer to communicate via text than phonecall. Today, majority of the population owns a cell phone, but how many of us can survive without one
the back of the motherboard and then slide the flat head into the case or plate. Make sure that the motherboard is not touching the case or plate on the back of the motherboard. Now install the plate if your case came with the removable one. Make sure your motherboard is tight but not too tight as to cause it to crack.Next connect the power to the motherboard. If you have an AT motherboard it will use 2 large 6 wire plugs. The black wires have to be together in the middle or you will fry your motherboard and believe me it has happened a lot. They will be hard to install but they will fit just keep trying. The problem is the little tabs placed on 1 side of them. If you have a ATX motherboard then you will have 1 large 20 wire plug. It is made so it can only be installed the right way. If you have a cpu that needs the extra 12 volt hooked to the motherboard then you will need to install it also. It looks different from the other connectors and will install only the right way.
The Telephone System The telephone is one of the most creative and prized inventions in the world. It has advanced from its humble beginnings to its wireless communication technology today and for the future. The inhabitants of the earth have long communicated over a distance, which has been done by shouting from one hilltop or tower to another. The word "telephone" originated from a combination of two Greek words: "tele", meaning far off, and "phone", meaning voice or sound, and became the known term for "far- speaking." A basic telephone usually contains a transmitter, that transfers the caller's voice, and a receiver, that amplifies sound from an In the transmitter there are two common kinds of transmitters: the carbon transmitter, and the electric transmitter.
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"The History and Evolution of Cell Phones." Ai InSite. N.p., 24 Oct. 2011. Web. 24 Nov.
File. The file is connected to the base of the nail clipper by a circular shaft at the opposite end of the clipper.
Farley, Tom. "Telephone History Part 3-1921 to 1984." n.pag. Online. Available: http://privateline.com/TelephoneHistory3/History3.html, Feb. 24, 1999.
Despite the short amount of time since the introduction of the smartphone, the rapid development of the software and technology has had a tremendous effect on the everyday life of society today. The concept of communicating through a telephone was developed in the 1870s. Devices to transmit speech electrically were designed by Elisha Gray and Alexander Graham Bell, but Bell's design was patented first. On March 10, 1876, Alexander Graham Bell achieved one of his greatest successes in the making of the telephone. This brought upon a major change in communication and gave leeway to the improvement of the telephone in the days to come (Bellis, 2013b).