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Artemis II Astronauts Have ‘Two Microsoft Outlooks’ and Neither Work (www.404media.co)
submitted 5 months ago by to c/technology@lemmy.world
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[–] 30 points 4 months ago* (last edited 4 months ago) (2 children)

The spacecraft that took astronauts to the Moon used the Apollo Guidance Computer, developed by MIT's Instrumentation Laboratory.

Clock speed: Approximately 1 MHz
Memory: About 64 KB total
Word size: 16-bit architecture
Power consumption: About 55 watts
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  • [–] 6 points 4 months ago (2 children)

    ...how does 36KB RAM and 72KB ROM give you a total of 64KB?

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  • [–] 7 points 4 months ago

    The AGC had 2048 words of erasable core storage, what we'd now call RAM, and 36,864 words of read only core rope memory. So a total of 38,912 words. Each word is 15 bits plus a parity bit, so that'd work out to 75,776 bytes or 72,168 bytes depending on whether you count parity or not, and then kilobytes, kibibytes...it's closer to 64k than 32 or 128.

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