Ответ:On March 7, 1876, Alexander Bell received a patent for the invention of the telephone. It is curious that Alexander Bell did not try to invent a telephone, but a “harmonic telegraph”.In 1861, the German physicist and inventor Johann Philipp Reis demonstrated another device that could also transmit musical and human speech by wire. The device had a microphone of an original design, a power source ("local battery" MB) and a speaker. Flight himself named the device he designed the Phone.That is, at first there was a telegraph and then in 1861 a telephone with a battery appeared
