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Oral — Data Storage

InventTable — ORAL ERA — Data storage

InventionDescriptionYearInventorCountry
Cave paintings image data 50,000 BCE Indonesia
Rock art petroglyphs Aborigine 45,000 BCE Australia
Baboon bone Lebombo bone, 29 tally marks 30,000 BCE Africa
Star chart Lascaux cave wall art 22,000 BCE Lascaux, France
Lunar calendar Lascaux cave wall art 15,000 BCE Lascaux, France
Map on bone carved map on bone 15,000 BCE Ukraine

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Leo Dean Jansen

Leo Dean Jansen, MD is a retired orthopedic surgeon with a special interest in the history of technology.  This web page is the culmination of  his efforts to define and organize the history of technology as seen through 2000 inventions.  TECHNOLOGY:  TABLE, TRUTHS, TIMELINE, TOP 100 represents the 4 parts of this project.

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