|  | Year | Event(s) | 
| 1 | 1924 | The dynamic loudspeaker invented by Rice and Kellogg.Notebooks with spiral bindings invented.
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| 2 | 1925 | The mechanical television a precursor to the modern television, invented by John Logie Baird.
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| 3 | 1926 | Robert H. Goddard invents liquid-fueled rockets.
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| 4 | 1927 | JWA Morrison invents the first quartz crystal watch.Philo Taylor Farnsworth invents a complete electronic TV system.Technicolor invented.Erik Rotheim patents an aerosol can.Warren Marrison developed the first quartz clock.Philip Drinker invents the iron lung.
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| 5 | 1928 | Scottish biologist Alexander Fleming discovers penicillin.Bubble gum invented by Walter E. Diemer.Jacob Schick patented the electric shaver.
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| 6 | 1929 | Herbert Hoover president of the USA 1929-1933.American, Paul Galvin invents the car radio.Yo-Yo re-invented as an American fad.
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| 7 | 1930 | Scotch tape patented by 3M engineer Richard G. Drew.The "differential analyzer", or analog computer invented by Vannevar Bush at MIT in Boston.Frank Whittle and Dr Hans von Ohain both invent a jet engine.
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| 8 | 1931 | Harold Edgerton invented stop-action photography.Germans Max Knott and Ernst Ruska co-invent the electron microscope.
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| 9 | 1932 | Polaroid photography invented by Edwin Herbert Land.
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| 10 | 1933 | Franklin Roosevelt president of the USA 1933-1945.Frequency modulation (FM radio) invented by Edwin Howard Armstrong.Stereo records invented.
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| 11 | 1934 | Charles Darrow claims he invented the game Monopoly.Joseph Begun invents the first tape recorder for broadcasting - first magnetic recording.
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| 12 | 1935 | Wallace Carothers and DuPont Labs invents nylon (polymer 6.6.).The first canned beer made.
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| 13 | 1936 | Edward VIII.  Ruler of England 1936.  House of Windsor (name adopted Jul 17, 1917): Eldest son of George V.George VI.  Ruler of England 1936-1952.  House of Windsor (name adopted Jul 17, 1917): 2nd son of George V, Duke of York; married Lady Elizabeth Bowes-Lyon.Bell Labs invents the voice recognition machine.Samuel Colt patents the Colt revolver.
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| 14 | 1937 | Chester F. Carlson invents the photocopier.
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| 15 | 1938 | The ballpoint pen invented by Ladislo Biro.Roy J. Plunkett invented tetrafluoroethylene polymers or Teflon.Nescafe or freeze-dried coffee invented.
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| 16 | 1939 | World War II begins.  Axis Powers: Germany, Italy, Japan vs. Major Allied Powers: United States, Great Britain, France, and Russia.  1939-1945.Igor Sikorsky invents the first successful helicopter.
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| 17 | 1940 | Peter Goldmark invents modern color television system.Karl Pabst invents the jeep.
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| 18 | 1941 | Konrad Zuse's Z3, the first computer controlled by software.
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| 19 | 1942 | John Atanasoff and Clifford Berry built the first electronic digital computer.
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| 20 | 1943 | Richard James invents the slinky.James Wright invent silly putty.Swiss chemist, Albert Hofmann discovered the hallucinogenic properties of LSD.Emile Gagnan and Jacques Cousteau invent the aqualung.
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| 21 | 1944 | The kidney dialysis machine invented by Willem Kolff.Synthetic cortisone invented by Percy Lavon Julian.
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| 22 | 1945 | World War II ends.Harry Truman president of the USA 1945-1953.The atomic bomb invented.
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| 23 | 1946 | The microwave oven invented by Percy Spencer.
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| 24 | 1947 | British/Hungarian scientist, Dennis Gabor, developed the theory of holography.Mobile phones first invented.Bardeen, Brattain, and Shockley invent the transistor.Earl Silas Tupper patented the Tupperware seal.
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| 25 | 1948 | The Frisbee® invented by Walter Frederick Morrison and Warren Franscioni.Velcro ® invented by George de Mestral.Robert Hope-Jones invented the Wurlitzer jukebox.
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| 26 | 1949 |  | 
| 27 | 1950 | Korean War:  United States (as part of the United Nations) and South Korea vs. North Korea and Communist China 1950-1953.The first credit card (Diners) invented by Ralph Schneider.
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| 28 | 1951 | Super glue invented.Power steering invented by Francis W. Davis.Charles Ginsburg invented the first videotape recorder (VTR).
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| 29 | 1952 | Elizabeth II.  Ruler of England 1952-present. House of Windsor (name adopted Jul 17, 1917): Elder daughter of George VI, acceded Feb 6, 1956.Mr. Potato Head patented.The first patent for bar code (US Patent #2,612,994) issued to inventors Joseph Woodland and Bernard Silver.The first diet soft drink sold called the "No-Cal Beverage" a gingerale sold by Kirsch.Edward Teller and team build the hydrogen bomb.
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| 30 | 1953 | Dwight Eisenhower president of the USA 1953-1961.Radial tires invented.The first musical synthesizer invented by RCA.Transistor radio invented by Texas Instruments.
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| 31 | 1954 | Oral contraceptives invented.The first nonstick pan produced.The solar cell invented by Chaplin, Fuller and Pearson.Ray Kroc started McDonalds.
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| 32 | 1955 |  | 
| 33 | 1956 | The first computer hard disk used.The hovercraft invented by Christopher Cockerell.Bette Nesmith Graham invented "Mistake Out," later renamed Liquid Paper, to paint over mistakes made with a typewriter.
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| 34 | 1957 | Fortran (computer language) invented.
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| 35 | 1958 | The modem invented.Gordon Gould invents the laser.The Hula Hoop invented by Richard Knerr and Arthur "Spud" Melin.The integrated circuit invented by Jack Kilby and Robert Noyce.
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| 36 | 1959 | The internal pacemaker invented by Wilson Greatbatch.Barbie Doll invented.Jack Kilby and Robert Noyce both invent the microchip.
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| 37 | 1960 | USA Vietnam War Begins"
"2The halogen lamp invented.
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| 38 | 1961 | Bay of Pigs Invasion:  United States vs Cuba 1961.John F. Kennedy president of the USA 1961-1963.Valium invented.The nondairy creamer invented.
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| 39 | 1962 | The audio cassette invented.The fiber-tip pen invented by Yukio Horie.Spacewar, the first computer video game invented.Dow Corp invents silicone breast implants.
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| 40 | 1963 | John F. Kennedy assassinated by Lee Harvey Oswald in Dallas, Texas, 22 Nov 1963.Lyndon B. Johnson president of the USA 1963-1969.  Lyndon B. Johnson, vice president under John F. Kennedy, sworn in as president aboard Air Force One upon death of Kennedy.The first videodisc invented.
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| 41 | 1964 | Acrylic paint invented.Permanent-press fabric invented.BASIC (an early computer language) is invented by John George Kemeny and Tom Kurtz.
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| 42 | 1965 | Astroturf invented.Soft contact lenses invented.NutraSweet invented.The compact disk invented by James Russell.
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| 43 | 1966 | Electronic Fuel injection for cars invented.
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| 44 | 1967 | The first handheld calculator invented.
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| 45 | 1968 | The computer mouse invented by Douglas Engelbart.The first computer with integrated circuits made.Robert Dennard invented RAM (random access memory).
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| 46 | 1969 | Richard Nixon president of the USA 1969-1974.The arpanet (first internet) invented.The artificial heart invented.The ATM invented.The bar-code scanner is invented.
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| 47 | 1970 | The daisy-wheel printer invented.The floppy disk invented by Alan Shugart.
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| 48 | 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 recorder invented.
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| 49 | 1972 | The word processor invented.Pong (first video game) invented by Nolan Bushnell.Hacky Sack® invented by John Stalberger and Mike Marshall.
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| 50 | 1973 | Gene splicing invented.The ethernet (local computer network) invented by Robert Metcalfe and Xerox.Bic invents the disposable lighter.
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| 51 | 1974 | Richard M. Nixon first president of USA to resign from office.  His decision was announced 8 Aug 1974.Gerald Ford president of the USA 1974-1977.The post-it note invented by Arthur Fry.Giorgio Fischer, a gynecologist from Rome, Italy, invents liposuction.
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| 52 | 1975 | USA Vietnam War EndsThe laser printer invented.The push-through tab on a drink can invented.
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