Age of electricity

XIX century the century of electromechanical information technology (telegraph first appeared, then - phone, finally - radio). Started fundamental changes in the technology of information processing. Telegraph us - this transfer to a distance of alphanumeric messages (telegrams). Its foundations were laid in Russia works Paul Schilling, who in 1832 created in the first set almost suitable devices for electric telegraph. Development and improvement of systems telegraph Samuel Morse also conducted (USA), Boris Jacobi (Russia), Jean Baudot (France), Charles Uitstona (Britain) and others.


Home Development telephone was invented in 1876 phone Scots Alexander Bell (Bell) and the establishment in 1978 the first telephone exchange in New Heyvene, USA. Four years later, was built by Bell's first telephone exchange from Moscow. And in the year before last in Moscow indicated century Central telephone exchange at 12 thousand rooms, and lived up to our days. Indeed, the telephone exchange in Milyutinskom lane works so far, the truth, "filling" is already very different. By the way, was the first telephone device containing carbon (carbon-powder) microphone - the main element of any modern sound system.