NASA prišla o sondu kvôli softvérovému problému typu Y2K
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64kB dohromady
Od: sensei-san
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Pridané:
2013-09-24 09:34:51
Computer Command System (CCS) - 18-bit word, interrupt type processors (2) with 4096 words each of plated wire, non-volatile memory.
Flight Data System (FDS) - 16-bit word machine (2) with modular memories and 8198 words each
Attitude and Articulation Control System (AACS) - 18-bit word machines (2) with 4096 words each.
...
The Voyager spacecraft computers are interrupt driven computer, similar to processors used in general purpose computers with a few special instructions for increased efficiency. The programming is a form of assembly language.
There is no clock chip, as such, in the spacecraft. The "clock" is really a counter, based on one of several electronically generated frequencies....The "clock" signal is part of the information telemetered to the ground and it is with ground software that we convert to day of year, time of day Greenwich Mean Time.
http://voyager.jpl.nasa.gov/faq.html
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