Tuesday, June 25, 2019

Another diode bites the dust in the AGC Current Switch Module

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Setback with erasable memory, failure in Current Switch module Near the end of our time with the AGC, we were running various portions of ...
Monday, June 24, 2019

Final upgrade to our AGC and working on simulating missions such as lunar landing

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Adding the PRO key support to this AGC The original version of the block II computer had a key on the DSKY marked STBY that was used to pu...
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Wednesday, June 19, 2019

Interacting with the running Apollo Guidance Computer using DSKY

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Testing the DSKY substitute We hooked up the DSKY substitute to the Apollo Guidance Computer and verified that all the lights, displays an...
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Monday, June 17, 2019

Erasable (core memory RAM) of Apollo Guidance Computer repaired and working properly

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New flaw in Current Switch module After having replaced the two failed diodes in this module, we began testing it with pulses to ensure th...
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Main spacecraft connector and patch panel finished, accelerometer simulator plugged in

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Main connector All connections between the spacecraft and the Apollo Guidance Computer take place through the main connector (A51). This h...

Retrieving previously lost Apollo programs from a museum's core rope modules

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Archiving We visited the Computer History Museum which has a pair of core rope modules containing the Retread 50 software. These are part ...
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Sunday, June 9, 2019

Finishing equipment to read core rope programs and drive the AGC with real Apollo software

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Core Rope Simulator box debugging The core rope simulator boxes that came with the Apollo Guidance Computer were built by Raytheon and des...