491: Difference between revisions

No change in size ,  7 July 2019
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* [[Media:Tek_491_Catalog_Spec_1979.pdf| Tektronix 491 Final Spec (PDF, OCR)]]
* [[Media:Tek_491_Catalog_Spec_1979.pdf| Tektronix 491 Final Spec (PDF, OCR)]]
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<center> NOTE: Due to severe performance limitations, it was replaced by the completely redesigned 492 in 1980 </center>
NOTE: Due to severe performance limitations, it was replaced by the completely redesigned 492 in 1980
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