The inventor of the telephone is: Alexander Bell. The invention of the telephone was invented by Alexander Bell after long-term painstaking research starting in 1873. The telephone is Alexander Bell. During his work, he saw that electromagnets that could convert electrical signals and mechanical movements were used in telegraph machines. After being inspired, he made a practical telephone device through repeated experiments.
As early as the 18th century, the word "telephone" existed in Europe, which was used to refer to a microphone strung with wires (a cup strung with wires). The emergence of the telephone is attributed to Alexander Graham Bell. The principle of early telephones is that the sound of speech is a composite vibration in the air, which can be transmitted to a solid body and transmitted through electrical pulses on conductive metals. Bell applied for a patent for the telephone in March 1876.
The United States Congress passed Resolution 269 on June 15, 2002, confirming Antonio Muzzi as the inventor of the telephone. Muzzi first demonstrated his invention to the public in 1860, publishing an introduction to it in an Italian-language newspaper in New York.
Historical improvements and inventions to telephones include: toner microphones, manual switching boards, dials, automatic telephone switches, program-controlled telephone switches, dual-tone multi-frequency dialing, digital voice sampling, etc. New technologies in recent years include ISDN, DSL, Internet telephony, analog mobile phones and digital mobile phones.