In 1876 AlexanderGraham Bell, anAmerican engineer,Invented telephone.
In 1908 James M.Spangler from theUSA built the firstvacuum cleaner.
Akito Morita (Japan)developed the firstpersonal stereo –Sony Walkman.
In 1908 USautomobile manufacturerHenry Ford created theworld’s first car assemblyline.
John Logie Bairdfrom Scotlandinvented televisionin 1926
Nicephore Niepcefrom France pioneeredphotography in 1829.
In 1981 Bill Gates(USA) createdMicrosoft-DOS(Disk Operating System).