20th Century Timeline

• 1900 to 1909 1910 to 1919 1920 to 1929
• 1930 to 1939 1940 to 1949 1950 to 1959
• 1960 to 1969 1970 to 1979 1980 to 1989
• 1990 to 1999 2000 onwards

The 70s began the age of the practical computer made possible by the invention of the floppy disk and the microprocessor that occurred during the 70s.

1970

• The daisy-wheel printer invented.
• The floppy disk invented by Alan Shugart.

1971

• The dot-matrix printer invented.
• The food processor invented.
• The liquid-crystal display (LCD) invented by James Fergason.
• The microprocessor invented by Faggin, Hoff and Mazor.
• VCR or videocassette invented.

1972

• The word processor invented.
• Pong first video game invented by Nolan Bushnell.
• Hacky Sack invented by John Stalberger and Mike Marshall.

1973

• Gene splicing invented.
• The ethernet (local computer network) invented by Robert Metcalfe and Xerox.
• Bic invents the disposable lighter.

1974

• The post-it notes invented by Arthur Fry.
• Giorgio Fischer, a gynecologist from Rome, Italy, invents liposuction.

1975

• The laser printer invented.
• The push-through tab on a drink can invented.

1976

• The ink-jet printer invented.

1977

• Magnetic resonance imaging invented by Raymond V. Damadian.

1978

• Dan Bricklin and Bob Frankston invented the VisiCalc spreadsheet.
• The artificial heart Jarvik-7 invented by Robert K. Jarvik.

1979

• Cell phones invented.
• Cray supercomputer invented by Seymour Cray.
• Walkman invented.
• Scott Olson invents roller blades.

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