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7000 Series plug-in interface: Difference between revisions
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From [[Media:On-The-History-And-Environment-Of-Tektronix.pdf|On the History and Environment of Tektronix]] page 58: | From [[Media:On-The-History-And-Environment-Of-Tektronix.pdf|On the History and Environment of Tektronix]] page 58: | ||
<blockquote> | <blockquote> | ||
But Howard then threw another challenge to his group: plug-in height. | But [[Howard Vollum|Howard]] then threw another challenge to his group: plug-in height. | ||
Work up through late 1966 had assumed a seven inch plug-in height | Work up through late 1966 had assumed a seven inch plug-in height which would provide room for the needed components using readily available and proven parts. | ||
which would provide room for the needed components using readily available and proven parts. | |||
But the H-P scopes were smaller in size and quite attractive in appearance. | But the H-P scopes were smaller in size and quite attractive in appearance. | ||
So, one day, Howard said, "the plug-ins will be 5 1/2 inches in height." | So, one day, Howard said, "the plug-ins will be 5 1/2 inches in height." | ||
Oliver Dalton recalls the decision to reduce the plug-in height as a traumatic one: | [[Oliver Dalton]] recalls the decision to reduce the plug-in height as a traumatic one: | ||
"The decision set us back at least one year for the height decision required three major electro-mechanical component efforts in addition to the IC read-out effort: 1) new lit push-buttons. . .we needed 25 on a panel; 2) cam | "The decision set us back at least one year for the height decision required three major electro-mechanical component efforts in addition to the [[7000 series readout system|IC read-out effort]]: 1) new [[Back-lit switches|lit push-buttons]] ... we needed 25 on a panel; 2) [[cam switch]]es - these were Howard's ideas ... we needed them to be small and reasonably cheap; 3) [[Miniature relays|relays]] ... we needed them to be small and reliable. We then largely had to make do with other available parts, like potentiometers." | ||
</blockquote> | </blockquote> | ||
[[Category:Plug-in interfaces]] | [[Category:Plug-in interfaces]] | ||