Hewlett-Packard introduces the HP-35 calculator
4th January 1972 On 4th January 1972, at a press conference at the St. Regis Hotel in New York, Hewlett-Packard announced the HP-35 calculator, the first handheld pocket scientific calculator. Designed to fit in a shirt pocket, the HP-35 was the first Hewlett-Packard product advertised directly to consumers. Related information: Image:
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