Alexander Graham Bell completes the first telephone call.
The first two-way voice conversation is transmitted across the Atlantic Ocean.
ENIAC, the first electronic digital computer, is put into operation. Since 1944 the Hungarian-born John von Neumann took part in the modification of some mathematical-logical details of ENIAC.
Reynold Johnson develops the first disk drive.
Silicon chips first appear.
The firm Eastman Kodak introduces the popular Instamatic camera with film cartridge.
Town Chicago tests the first commercial fiber-optic communications system.