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A DEC System Modules (originally known as System Building Blocks; the name was changed around 1961) are a DEC modular digital logic family which preceded FLIP CHIPs. They connect to the units they are plugged into via a set of 22 gold-plated discrete pins along one edge.
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Input/Output | instance of | special modules were available for purposes | 0.80 | text |
| those illustrated here all use fiberglass-epoxy printed circuit boards.System Modules are powered from | instance of | Later examples | 0.80 | text |
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