Qualitron 1407 Vintage calculator Part 2
Diagnostic, repair.
Hi everyone,
This is the final video, the project is done.
It was an interesting piece of history with vintage technology that comes from 1975.
Some technical information,
IC: EA7065
Clock frequency: 380KHz
Display refresh rate: 2.35KHz
Part 1 • 1975 calculator "Qual...
73! And Happy New Year!
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