Jerry
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Kazimierz Dąbrowski
Intellectual Giftedness
Genius
Child Prodigies
Blaise Pascal (1623-1662)
Calculators
Electronic Calculators
TI-30 (1976-1983, $25)
The Slide Rule
Attachments
The Slide Rule - johnpatrick.com
Parents
HP-35 (1972)
John Patrick
Logarithm (1614)
Slide Rules (1622 "slipsticks")
TI-30 (1976-1983, $25)
William Oughtred
Children
For decades, a slide rule was as closely associated with engineers as a stethoscope is with doctors.