Field-replaceable unit: Difference between revisions

Revision as of 11:02, 28 February 2023

Revision as of 09:36, 20 March 2025

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==History==

Many [[vacuum tube]] computers had FRUs:

* Pluggable units containing one or more [[vacuum tube]]s and various [[passive component]]s

Most [[transistor]]ized and [[integrated circuit]]-based computers had FRUs:

* [[Computer module]]s, circuit boards containing discrete transistors and various passive components. Examples:

** [[IBM Standard Modular System|IBM SMS cards]]

** [[System Building Blocks|DEC System Building Blocks]] cards

** [[Flip -Chip (PDP module)|DEC Flip-Chip]] cards

* Circuit boards containing monolithic ICs and/or [[hybrid integrated circuit|hybrid ICs]], such as [[IBM Solid Logic Technology|IBM SLT cards]].

Vacuum tubes themselves are usually FRUs.