The Hewlett-Packard HP 01 is a wristwatch with calculator capabilities. It was introduced in 1977 and was offered in two case/band versions, stainless steel and gold. It has a red LED display and runs on three A76 batteries.

I am interested in finding any HP-01 watches, manuals and documents. If you have any such equipment or documentation, please send me an e-mail!

The following item appeared in the July 1977 issue of IEEE Spectrum magazine.


Wristwatch calculators are not new but Hewlett-Packard's new instrument carries the concept far beyond what has been available. Resembling a digital watch, the HP-01 uses a low-power microprocessor containing the equivalent of about 38,000 transistors to give it six interactive functions - time, alarm, timer/stopwatch, date/calendar, calculator, and memory. There are 28 keys (six finger-operated and 22 stylus-operated). Using LEDs for display, the instrument has numerous features, including a 200-year calendar that can display the date in either the month, day, year or the day, month, year (common outside the United States) format, and can also be used to find past or future dates. Its memory permits storage of time of day, stopwatch interval, calendar date, or numbers. Price of the instrument in the United States is $650 (stainless steel); $750 (gold-filled.)

This notice appeared in the August 1977 issue of IEEE Spectrum magazine.

A twelve-page sales brochure from March of 1977.

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