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The "Block I" Apollo Guidance Computer represented the initial design by the MIT Instrumentation Laboratory, to meet NASA's requirements for on-board Guidance, Navigation, and Control for a Lunar Mission. It was replaced by a more advanced design, called "Block II," as the Apollo program matured. Block I computers were flown on three unmanned Apollo tests between August 1966 and April 1968.

This computer is an unflown unit. It was built by the Raytheon Corporation, and used about 4,000 circuits.

Transferred from NASA to the Museum in 1972.

 Display Status

This object is on display in Human Spaceflight at the Steven F. Udvar-Hazy Center in Chantilly, VA.

Human Spaceflight
Object Details
Country of Origin United States of America Type INSTRUMENTS-Navigational Manufacturer Raytheon Corp.
 Dimensions 3-D: 64.1 x 39.4 x 14cm (25 1/4 x 15 1/2 x 5 1/2 in.)
 Materials Metal housing, with electronic parts inside.
 Inventory Number A19720341000 Credit Line Transferred from the National Aeronautics and Space Administration Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
For more information, visit the Smithsonians Terms of Use.