NUMBERS ERA
Era
NUMBERS ERA 476 AD-1450 Hindu-Arabic numbers, math, Islamic Golden Age, China, stirrups, gunpowder
NUMBERS ERA – by time represents 0.4% of human existence.
NUMBERS ERA – represents 3% of inventions or 67/2000 inventions.
Inventions from the Data communication Classification
| Invention | Description | Year | Inventor | Country |
| Paper currency | money | 800 AD | China | |
| University | early form | 859 AD | Fez, Morocco | |
| University, Europe | degree granting | 1088 AD | Bologna, Italy |
Inventions from the Data storage Classification
| Invention | Description | Year | Inventor | Country |
| 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 |
Inventions from the Energy radiant Classification
| Invention | Description | Year | Inventor | Country |
| Sulfur matches | 577 AD | China | ||
| Windmill | wind power | 650 AD | Persia | |
| Black gunpowder | sulfur, charcoal, potassium nitrate | 850 AD | Wei Boyang | China |
| Firelance | first firearm | 950 AD | China | |
| Bomb | explosive | 1221 AD | China | |
| Hand cannon | firearm | 1250 AD | China | |
| Bronze cannon | weapon/artillary | 1326 AD | China | |
| Musket | true firearm | 1350 AD | China |
Invention from the Energy current Classification
| Invention | Description | Year | Inventor | Country |
| Windmill | milling function powered by wind | 650 AD | Persia |
Inventions from the Machines non-transport Classification
| Invention | Description | Year | Inventor | Country |
| Spinning wheel | for yarn | 700 AD | India | |
| Mechanical clock | timekeeping | 725 AD | China (31) | |
| Longbow | more powerful bow | 1000 AD | England, UK | |
| Crankshaft | machine | 1206 AD | Al-Jazari | Syria |
| Combination lock | security | 1206 AD | Al-Jazari | Syria |
| Camshaft | machine | 1206 AD | Al-Jazari | Syria |
| Scythe | agriculture tool | 1300 AD | Europe |
Inventions from the Transport Machines Classification
| Invention | Description | Year | Inventor | Country |
| Viking longboat | ocean going oared sailboat | 1000 AD | Scandinavia | |
| Wet compass | compass for navigation | 1040 AD | China (71) | |
| Chinese junk | ocean going sailboat | 1100 AD | China | |
| Rocket | distant war weapon | 1232 AD | China |
Inventions from the Materials, metals Classification
| Invention | Description | Year | Inventor | Country |
| Bessimer process | steel production | 1040 AD | China | |
| Coil spring | timekeeping | 1420 AD | Germany |
Inventions from the Materials, non-Metals Classification
| Invention | Description | Year | Inventor | Country |
| Clear glass | windows, lenses | 500 AD | Angelo Barovier | Italy |
| Toilet paper | improved hygiene | 589 AD | China | |
| Porcelain | high quality ceramic | 700 AD | China | |
| Eyeglasses | corrective optics | 1000 AD | China | |
| Magnifying glass | optics | 1250 AD | Roger Bacon | England (UK) |
Inventions from the Domestic Biotech Classification
| Invention | Description | Year | Inventor | Country |
| Coffee | caffeine drink | 800 AD | Kaldi the goat herder | Ethiopia |
| Button | garment closure | 1250 AD | Germany | |
| Banking | institutionalized | 1350 AD | Bardi and Peruzzzi families | Florence, Italy |