hieroglyphic 发表于 2025-4-1 02:22:07

Lisa Brothers Arbisser there was a need to develop a device to do the mathematics quickly. This led to the invention of the abacus, the device many believe was the mother of the digital computer as we know it today, between 1000 B.C. and 500 B.C.Without performing actual calculations, the abacus helps the person using it

crease 发表于 2025-4-1 08:03:30

Giacomo Savini,Kenneth J. Hoffer there was a need to develop a device to do the mathematics quickly. This led to the invention of the abacus, the device many believe was the mother of the digital computer as we know it today, between 1000 B.C. and 500 B.C.Without performing actual calculations, the abacus helps the person using it

浪费时间 发表于 2025-4-1 13:08:00

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查看完整版本: Titlebook: Innovation in Cataract Surgery; Gede Pardianto,Marie-José Tassignon Book 2024 The Editor(s) (if applicable) and The Author(s), under exclu