Greeks use a phonetic alphabet written from left to right
Greeks use a phonetic alphabet written from left to right
Claude Chappe invents the first long-distance semaphore (visual or optical) telegraph line
Joseph Nicéphore Niépce achieves the first photographic image.
Charles Wheatstone reproduces sound in a primitive sound box - the first microphone.
Samuel Morse invents the first long distance electric telegraph line.Alexander Bain patents the first fax machine.
Lee Deforest invents the electronic amplifying tube or triode - this allowed all electronic signals to be amplified improving all electronic communications i.e. telephones and radios.
Thomas Edison demonstrated the first talking motion picture.
NBC starts two radio networks.CBS founded.First television broadcasts in England.Warner Brothers releases "The Jazz Singer" the first successful talking motion picture.
The computer floppy disc invented.The microprocessor invented - considered a computer on a chip.
IBM PC first sold.First laptop computers sold to public.Computer mouse becomes regular part of computer.
