Dates for inventions are often controversial. Inventions are often invented by several inventors around the same time, or may be invented in an impractical form many years before another inventor improves the invention into a practical form. Where there is ambiguity, the date of the first working version of the invention is used here. 

1971: E-mail: Ray Tomlinson

1971: Liquid Crystal Display: James Fergason

1971: Microprocessor

1971: Pocket calculator: Sharp Corporation

1971: Magnetic resonance imaging: Raymond V. Damadian

1971: Floppy Disk: David Noble with IBM

1972: Computed tomography: Godfrey Newbold Hounsfield

1973: Ethernet: Bob Metcalfe and David Boggs

1973: Genetically modified organism: Stanley Norman Cohen and Herbert Boyer

1973: Personal computer: Xerox PARC

1974: Rubik's Cube: Ernő Rubik

1974: Hybrid vehicle: Victor Wouk

1975: Digital camera: Steven Sasson

1976: Gore-Tex fabric: W. L. Gore

1977: Personal stereo: Andreas Pavel

1977: Cellular mobile phone: Bell Labs

1978: Spring loaded camming device: Ray Jardine

1978 : Spreadsheet: Dan Bricklin

1970s: Leaf blower in Japan  

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