> But he did not make personal use of his own inventions. His daughter said he never had a pocket calculator as far as she knew, instead carrying a slide-rule a

> But he did not make personal use of his own inventions. His daughter said he never had a pocket calculator as far as she knew, instead carrying a slide-rule around with him at all times. And he told interviewers he used neither a computer nor email. Now that is probably unique among computer pioneers…