Calculator, Hand-held, HP 41


Display Status:

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Collection Item Summary:

This is an HP-41C pocket calculator, manufactured by Hewlett-Packard, that has flown on nine Space Shuttle missions in the 1980s. NASA purchased it from a local store in Houston, and installed special software on it for each mission. Mission critical computing was still done by the Shuttle on-board computers, but pocket calculators found many other uses in space. This calculator could have performed critical re-entry calculations if the main computers failed.

This HP-41C was used by Astronaut Sally Ride and several other astronauts on a total of nine Shuttle missions.

Collection Item Long Description:

Data Source

National Air and Space Museum


Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum

Credit Line

Transferred from the National Aeronautics and Space Administration


Case: plastic, with plastic buttons. Silicon Integrated Circuits inside.


3-D: 15.2 x 7.6 x 5.1cm (6 x 3 x 2 in.)

Country of Origin

United States of America


INSTRUMENTS-Computers, General Purpose

Inventory Number


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