History of mobile
The invention of the telephone Graham Bell's success in inventing the telephone came as a direct result of his attempts to improve the telegraph, which has been the established method of communication for nearly 30 years, as he confined himself to sending and receiving one message at a time. Graham Bell's vast experience like sounds and music contributed to predicting a means of transmitting messages. Multiple runs across the same wire at the same moment, which is called the harmonic telegraph.
Principle
The principle of the harmonic telegraph was based on the possibility of sending many notes through the same wire, and at the same moment when these notes or signals differed in pitch, and the year 1874 CE, Bill, the father of his future wife, reported the progress of his research, and the capabilities of the multiple telegraphs, where he provided support His financial.
History
Graham Bell began his work on the multiple telegraphs with the help of Thomas Watson, where they developed a device that transmits speech electrically, and in March of 1875 AD Graham Bell met secretly with the director of the Smithsonian Institution and told him about his ideas related to the telephone to receive support and encouragement to complete his work, and by June of The same year, Graham Bell and Watson demonstrated that different tones lead to a variation in the strength of the electric current in the wire, and to demonstrate this success required the design of a transmitter operating with a membrane that can change electronic currents, in addition to a receiver that can reproduce these changes in the form of audible frequencies.
By chance, Graham Bell and Watson, during an experiment with a harmonic telegraph, discovered that sound could travel through a wire on July 2, 1875, when Watson tried to loosen a reed that was wrapped around the transmitter by chance, and the resulting vibration transmitted through the wire to a device. Another is in Bell's room, and hearing this ringing speeded up Bill and Watson their work, and they continued to work on this idea the following year, and Graham Bell was narrated that he shouted into the speaker, and said, "Mister Watson, come here, I want to see you." So Mr. Watson went, and announced that he had heard and understood what he had said, and that was the first phone call in history.
Original phone design
The original design of the phone was a modified version of the telegraph, and Bell continued to improve its design, so that after two years he was able to develop a magnetic phone as an introduction to modern phones, and the design also contained a transmitter, a receiver, and a magnet as the transmitter and receiver contained a membrane made of a disk metallic.
Bel company
Alexander Graham Bell, inventor of the telephone The Alexander Graham Bell (English: Alexander Graham Bell) managed in a world Scottish in 1876 from the invention of the telephone, it was not by chance; Graham Bell was interested from a young age in learning to read lips and to speak. By that his mother was deaf, and he tried again and again to transmit the sound, and speak in some way, and he realized that it was possible to send or receive sound waves through wires, and he conducted many experiments on this and researches that eventually led him to the invention of the telephone Because of his patent, he set up his own company called the Bell Company.
Definition of a smartphone
The smartphone is defined as a portable computer built and manufactured inside the mobile phone, where the smartphone is equipped with a display screen and smart technical programs to manage personal information, and the smartphone is considered one of the devices that have an operating system that allows running various computer programs, such as web browsing, e-mail, music, photos, and many different applications.
Smartphone features
The smartphone is characterized by its ability to carry out several tasks and responsibilities, the most important of which are the following:
Manage an individual's personal information such as calendar, daily to-do list, and personal notes.
The ability to communicate with other devices such as desktop computers.
The ability to synchronize information with Microsoft applications, word processing applications, and video games.
The ability to cash checks and delete receipts. Store credit card information and bill payments.
The ability to establish a connection via Wi-Fi networks.
Smartphone tasks
Telephone communications: The main function of smartphone devices is to provide incoming and outgoing phone calls, in addition to that most smartphones provide the ability to choose the speaker for the call, and it also provides enjoyment of the service of leaving a message when calls are not answered.
Photography: Smartphones include a high-resolution digital camera that helps in obtaining digital images, and through the smartphone, the individual can share these images directly using the phone with others on social networking sites or by using text messages, and it also provides the ability to record video clips.
Text messages: The smartphone provides the ability to send and receive short text messages, as the smartphone contains a keyboard that is displayed on the phone screen when needed, designed as a computer keyboard, so it has been preferred over the traditional phone keyboard.
Internet connection: The smartphone provides Internet browsing service through web browser programs just like computers, as this process is performed by receiving Wi-Fi networks or receiving cellular towers, in addition to that one can browse the world through web networks
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