Jerry
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My Bibliography
Psychologists
Kazimierz Dąbrowski
Intellectual Giftedness
Genius
Child Prodigies
Blaise Pascal (1623-1662)
Calculators
Mechanical Calculators
Attachments
Mechanical_calculator
Parents
Calculators
Children
A Brief History of Mechanical Calculators
Beautiful, detailed photos of mechanical calculators' guts
Curta (1948)
Leibniz Wheel (1673)
Pinwheel calculator
Reckoning with Matter: Calculating Machines, Innovation, and Thinking about Thinking from Pascal to Babbage (2016)
Jumps
Slide Rules (1622 "slipsticks")