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Numbers— Data storage

InventTable — NUMBERS ERA — Data storage

InventionDescriptionYearInventorCountry
Modern fractions 499 AD Aryabhata India
Quill pen feather writing 580 Sevilla, Spain
Mathematical zero 628 AD Brahmagupta India
Paper currency money 800 AD China (54)
Hindu-Arabic numbers base 10 modern numbers 820 AD India/Middle East (13)
Algebra complex math 850 AD Syria
University 859 AD Fez, Morocco
Movable type printing metal 1088 AD Bi Sheng, Song Dynasty China (6)
True university Europe 1088 AD Bologna Italy
Modern musical notation 1120 AD Giudo d'Arezzo Italy
Bank money storage 1149 AD Genoa Italy

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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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