1: 1960: The Haloid Photographic Co., now Xerox Corp., ships the first commercial photocopy machine, the Model 914.
4: 1906: Robert von Lieben of Vienna, Austria, applies for a patent on a “cathode-ray relay,” an early electron-tube amplifier.
18: 1965: Soviet cosmonaut Aleksei Leonov goes for the first space walk, on a Voskhod 2 flight.
18–21: Region 3 meeting in Charlotte, N.C.
20: Region 1 meeting in Newark, N.J.
20: 1886: An IEEE Milestone, the first commercial AC power plant and distribution system in the United States, goes into service in Great Barrington, Mass.
22: 1895: First public demonstration by Auguste and Louis Lumière of their Cinématographe, a motion picture projector, in Paris.
27: 1845: Birth date of Wilhelm Conrad Röntgen, discoverer of X-rays and winner of the 1901 Nobel Prize in Physics.
1: 1976: Steve Jobs and Steve Wozniak found Apple Computer.
Photo: Eloy Alonso/Reuters
3: 1973: Motorola project manager Martin Cooper makes the first phone call with a portable handheld phone.
9: 1919: Birth date of John Presper Eckert Jr., one of the designers of the ENIAC, EDVAC, and UNIVAC I computers.
10: 1989: Intel introduces the 486 microprocessor chip.
17–18: Region 5 meeting in Dallas.
25: 1874: Birth date of radio pioneer Guglielmo Marconi.
30 to 2 May: Region 7 meeting in Calgary, Alta., Canada.
Photo: Computer Laboratory/University of Cambridge
1: 1947: The first U.S. radar for commercial or private aircraft is demonstrated on a Trans World Airlines plane.
2: 1880: The Columbia becomes the first U.S. steamship to use electric lights.
6: 1949: The first practical stored-program computer, the EDSAC, runs its first program at the Cambridge University Mathematical Laboratory.
7: 1958: The first implantable cardiac pacemaker is placed in a dog.
8–9: Region 8 meeting in Riga, Latvia.
14: 1973: The United States launches Skylab, its first space station.
19: 1971: The Soviet Union launches Mars 2, the first spacecraft whose descent module crash-landed on Mars.
Historical events provided by the IEEE History Center.
IEEE events indicated in RED.