A Gemini 3 (1965) flown RANAM (Random Access Non-Destructive Readout) chip is to star in a sale of space memorabilia at Heritage Auctions.
It's valued at $1,200-1,800.
The chip formed part of the on-board computer, the first time such a device was used on a spacecraft.
It was needed due to the increased complexity of the inflight manoeuvres.
The computer was designed by the IBM Federal Systems Division and was the first digital computer in space.
It also featured a number of other innovations that significantly advanced the development of the computer.
The IBM archives feature a description of the device: "The computer weighed approximately 59 pounds, performed more than 7,000 calculations a second, and needed no more room than a hatbox - 1.35 cubic feet - aboard the Gemini.
"It had an average power consumption of 94.54 watts, a 500 kc bit rate, a memory cycle time of 250 kc and an add time of 140 microseconds.
"The computer's memory was a random-access, nondestructive readout design with flexible instruction and data storage organization.
"Its nominal capacity was 4,096 39-bit words and its operational capacity was 12,288 13-bit words."
Please sign up to our free newsletter to receive exciting news about space memorabilia auctions.