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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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SMS cards: The technology inside IBM’s 1960s mainframes

Posted by jpluimers on 2015/12/11

When SMS means Standard Module System.

Pure Geek Porn, for instance this triple AND gate:

triple AND gate with germanium transistors and diodes

triple AND gate with germanium transistors and diodes

Thanks Jan Wildeboer for sharing this.

–jeroen

via: SMS cards: The technology inside IBM’s 1960s mainframes.

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