Burroughs 724xx Series  
Written by Accutron on 2017-01-31  

Devices included in this entry:

Burroughs 72477 diode card
Burroughs 72480 logic module (pictured in thumbnail)

Burroughs 724xx series circuit modules are the building blocks of the Burroughs B5000 mainframe, an incredibly advanced system introduced in 1961 which pioneered many features of modern computing. 724xx series pluggable modules come in two primary forms: cubical cordwood-style transistorized logic blocks, and small cards containing eight diodes suspended in a diallyl pthalate frame.

Burroughs 74277 diode card.

Several different revisions of the 74277 diode card.

Burroughs 72480 logic module.

72480 logic module, side view.

This article is part of the [Logic & Memory Circuits] exhibit.

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