Gemini Guidance Computer

Gemini Guidance Computer
	Gemini Guidance Computer in National Air and Space Museum
Invented by	IBM Federal Systems Division
Manufacturer	IBM Federal Systems Division
Introduced	1965; 59 years ago
Discontinued	1966; 58 years ago
Type	Avionics; Guidance Computer
Processor	Discrete Components
Frequency	7.143 kilohertz clock
Memory	39-bit words memory, each composed of three 13-bit syllables, 4,096 words of memory, in a ferrite core array.
Ports	Modular Display Keyboard (MDK), Modular Display Readout (MDR), Attitude Control and Maneuver Electronics (ACME), Inertial Measurement Unit (IMU), Horizon Sensors, Time Reference System (TRS)
Weight	58.98 lb (26.75 kg)
Dimensions	18.9 in × 14.5 in × 12.75 in (48.0 cm × 36.8 cm × 32.4 cm) (H)×(W)×(D)

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]

^ Tomayko, James E. (March 1988). "Ch1-2".
^ "The Gemini Spacecraft Computer".
^ Cite error: The named reference manual was invoked but never defined (see the help page).
^ 8. J. C. Hundley and R. A. Watson, "A Digital Computer in Orbital Flight," TR 63-825-892, IBM Federal Systems Division, Owego, New York, October 1964.

[1] Tomayko, James E. (March 1988). "Ch1-2".

[2] "The Gemini Spacecraft Computer".

[manual-3] Cite error: The named reference manual was invoked but never defined (see the help page).

[ibm-4] 8. J. C. Hundley and R. A. Watson, "A Digital Computer in Orbital Flight," TR 63-825-892, IBM Federal Systems Division, Owego, New York, October 1964.

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