Science, Technology & Medicine 
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    'Automatic' calculators
     1 member comment 
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    1966 GM Electrovan
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    2-prong ungrounded AC outlets
     5 member comments 
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    Addiator
     Contributed by Camden 
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    Adding machine
     Contributed by GlenEllyn 2 member comments 
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    ALGOL programming language
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    Alvin (DSV-2)
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    The Apollo space program
     3 member comments 
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    Armored "Bx" cable
     1 member comment 
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    ARPANET
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    Audio tape splicing blocks
     4 member comments 
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    Baby aspirin
     Contributed by LoyalTubist 3 member comments 
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    BASIC programming language
     6 member comments 
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    Bendix G-15 computer
     1 member comment 
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    Car TV
     Contributed by LoyalTubist 3 member comments 
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    Card sorters
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    Cathode ray tubes (CRT)
     1 member comment 
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    Charge-coupled device (CCD)
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    Clock radios with Telechron clocks
     1 member comment 
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    COBOL programming language
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    Commercial use of Morse Code
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    Comptometers
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    Cray-1 supercomputer
     1 member comment 
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    Cycles per second
     2 member comments 
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    DNA double-helix structure
     1 member comment 
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    The Dolby noise-reduction system
     5 member comments 
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    Dry cell batteries
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    Fan-fold computer printouts
     3 member comments 
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    First all-electronic desktop calculator
     1 member comment 
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    First geosynchronous communications satellite
     1 member comment 
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    First home video tape recorder
     8 member comments 
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    First human spaceflight
     2 member comments 
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    First successful heart transplant
     2 member comments 
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    First successful kidney transplant
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    First successful liver transplant
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    First successful minicomputer
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    First working Laser
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    FORTRAN programming language
     3 member comments 
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    Friden Flexowriter
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    Fuses and fuse boxes
     5 member comments 
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    The Gemini space program
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    Goiter pills
     Contributed by CJ 
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    Hollerith ('IBM') punch cards
     6 member comments 
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    I.G.Y. - International Geophysical Year 1957-1958
     Contributed by Camden 2 member comments 
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    The iron lung
     1 member comment 
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    Keypunches
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    Magnetic core memory
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    Mainframe computers
     2 member comments 
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    Manual adding machines
     1 member comment 
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    Manual cash registers
     2 member comments 
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    McBee Keysort edge-notched cards
     1 member comment 
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    The Mercury space program
     1 member comment 
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    The new-fangled transistor
     1 member comment 
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    Nixie tubes
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    Not-quite-all-electronic telephone switching system
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    Paper tape data storage
     2 member comments 
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    pHisoHex
     Contributed by LoyalTubist 8 member comments 
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    Picturephone
     1 member comment 
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    Polio vaccine introduced
     4 member comments 
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    Pregnancy tests used rabbits
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    Princess phones
     2 member comments 
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    Reel-to-reel tape recorders
     11 member comments 
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    Rotary phones, alpha prefixes...
     17 member comments 
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    Sonotone 1010 hearing aid
     1 member comment 
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    Spacewar!
     1 member comment 
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    Sputnik
     4 member comments 
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    Switchboard operators
     1 member comment 
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    Teletype ASR-33
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    Telstar 1
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    Thalidomide
     2 member comments 
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    Thorazine introduced in the U.S. (1954)
     1 member comment 
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    Touch-Tone telephones introduced
     1 member comment 
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    TV Channel 6 on FM Radio (87.75 MHz)
     Contributed by LoyalTubist 1 member comment 
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    TV ghosts
     1 member comment 
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    UNIVAC 1
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    Vacuum tube testers
     6 member comments 
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    Vacuum tubes
     4 member comments 
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    Vibroplex Morse Code keys
     1 member comment 
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    Western Union telegrams
     2 member comments 
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    X-15 rocket plane
     1 member comment 
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