Ch1-4
Computers in Spaceflight: The NASA ...
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Creating the computer: government, industry, ...
burroghs atlas guidance - G...
Some Burroughs Transistor Computers - Folklor...
The Atlas Guidance Computer The Burroughs G...
Atlas Guidance Computer - G...
[PDF] Biography of Spacecraft Computer Referen...
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Gemini Inertial Guidance Sy...
1962 February 22 Proposal for redundant subs...

Crews began the catch-up by entering the ground-calculated rendezvous angle desired into address 83. The rendezvous angle indicated how much farther along in a 360-degree orbit the rendezvous was to take place. For example, if the crew desired rendezvous one-third orbit ahead, 12000 was entered into address 83 using the MDIU. The interval at which the pilot wanted to see updates was then entered in address 93. For example, if 04000 was entered, the computer would display on the IVI any required velocity changes at 120 degrees from the rendezvous point (the start), 80 degrees to go, and 40 degrees to go. If the IVI indicated that the computer had calculated that such a rendezvous was possible within the designated fuel limits, the astronauts pressed the START button and the IVI displayed the first set of velocity differentials. The pilot then fired the thrusters until the displays were all at zero