1973 “HP Measurement/Computation:changing things for the better”, Scientific American, July 1973, pp. 6–7. Original print article.
Two full pages advertisement for the HP-35, HP-45 pocket and HP-46 desktop printing scientific calculators.
Note similar machines in collection Calculant:
- July1972: Hewlett Packard HP 35 Calculator serial 1230A 79429, 1972 (second version)
- December 1973: Hewlett Packard HP 45 Calculator serial 1350A 36719, 1973
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