The Gemini Guidance Computer (sometimes Gemini Spacecraft On-Board Computer (OBC)) was a digital, serial computer designed for Project Gemini, America's second human spaceflight project.

[3] The computer, which facilitated the control of mission maneuvers, was designed by the IBM Federal Systems Division.

[4] Project Gemini was the first with an on-board computer, as Project Mercury was controlled by computers on Earth.

[5] The Gemini Guidance Computer was responsible for the following functions:[4][3] As of this edit, this article uses content from "Gemini Guidance Computer", which is licensed in a way that permits reuse under the Creative Commons Attribution-ShareAlike 3.0 Unported License, but not under the GFDL.

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