32,948
edits
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|introduced=1961 | |introduced=1961 | ||
|discontinued=(?) | |discontinued=(?) | ||
|designers= | |designers=Norm Winningstad,Chuck Edgar,George Frye | ||
|manuals= | |manuals= | ||
* [[Media:070-324.pdf|Tektronix 661 Manual 070-324]] (early) | * [[Media:070-324.pdf|Tektronix 661 Manual 070-324]] (early) |