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100
Cave Drawings
30,000 BC
Archaeologists calculated that a dozen stencils of hands in mulberry red and two detailed drawings of an animal described as a "pig-deer" are between 35,000 to 40,000 years old, based on levels of decay of the element uranium. That puts the art found in Sulawesi, southeast of Borneo, in the same rough time period as drawings found in Spain and a famous cave in France. http://www.wric.com/story/26766048/study-asian-cave-drawings-as-old-as-european-ones -
100
Petroglyphs
9,000 BC
Petroglyph National Monument protects one of the largest petroglyph sites in North America, featuring designs and symbols carved onto volcanic rocks by Native Americans and Spanish settlers 400 to 700 years ago. These images are a valuable record of cultural expression and hold profound spiritual significance for contemporary Native Americans and for the descendants of the early Spanish settlers. http://www.nps.gov/petr/index.htm -
Oct 9, 1450
Printing Press
He who first shortened the labor of copyists by device of movable types was disbanding hired armies, and cashiering most kings and senates, and creating a whole new democratic world: he had invented the art of printing. http://historyguide.org/intellect/press.html -
Telegraph
Developed in the 1830s and 1840s by Samuel Morse (1791-1872) and other inventors, the telegraph revolutionized long-distance communication. It worked by transmitting electrical signals over a wire laid between stations. In addition to helping invent the telegraph, Samuel Morse developed a code (bearing his name) that assigned a set of dots and dashes to each letter of the English alphabet and allowed for the simple transmission of complex messages across telegraph lines. http://www.history.com/ -
Typewriter
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Telephone
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Computer
