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the basic structure is a select transistor with a gate that is common to the entire row (two tan horizontal lines). the middle light blue region is VCC -- delineated by the faint crenulations. circled in green is a stubby tan bar that is the floating gate.

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the basic structure is a select transistor with a gate that is common to the entire row (two tan horizontal lines). the middle light blue region is VCC -- delineated by the faint crenulations. circled in green is a stubby tan bar that is the floating gate.
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Tube❄️Time (tubetime@mastodon.social)'s status on Friday, 02-May-2025 15:45:19 JST Tube❄️Time
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here are four EPROM cells. the critical element is a transistor (circled) that has a floating gate -- a control electrode with no external connection! modern flash memories also use floating gates, but the construction is quite different.

In conversation about a month ago from mastodon.social permalink