Heathkit GC-1107
1977
This is a Heathkit GC-1107 VFD 4-digit digital clock that was sold as a kit and assembled by a hobbyist. I found this clock in Goodwill for $5 in working condition and it operated reliably by my beside for all of the ~10 years before I retired it to become a museum piece. The schematic can be found at https://archive.org/details/Heathkit_GC-1107_Digital_Alarm_Clock.
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Jon Stanley