Digital Devices 中 NOKIA 11
Digital Devices 11
Brief History of Computers Wolf Radius Bone Wolf radius bone ca.25,000-30,000 B.C.showing 55 cuts in groups of five,suggesting a rudimentary form of multiplication or division. (Source:Illustrated London News,October 2,1937.) 12
Brief History of Computers 12 Wolf Radius Bone • Wolf radius bone ca. 25,000–30,000 B.C. showing 55 cuts in groups of five, suggesting a rudimentary form of multiplication or division. (Source: Illustrated London News, October 2, 1937.)
Tally Sticks Original wooden tally sticks from Westminster, England,ca.1250-1275 A.D. (SSPL/The ImageWorks.) 13
13 Tally Sticks • Original wooden tally sticks from Westminster, England, ca. 1250–1275 A.D. (© SSPL/The ImageWorks.)
The evolution of computing machinery has taken place over several centuries.The evolution of computers is usually classified into different generations according to the technology of the era. Generation Zero:Mechanical Calculating Machines (1642-1945) 14
14 ⚫ The evolution of computing machinery has taken place over several centuries. The evolution of computers is usually classified into different generations according to the technology of the era. ⚫ Generation Zero: Mechanical Calculating Machines (1642 - 1945)
Cylinder Music Box 。 Victorian Swiss cylinder music box,dated 1862. 润 15
15 Cylinder Music Box • Victorian Swiss cylinder music box, dated 1862