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This construction article appeared in the September 1973 issue
of Popular Electronics magazine. It is a design for a
single-digit electronic clock using a National Semiconductor MM5314
digital clock IC
and a seven-segment readout tube (RCA DR2000 or equivalent).
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Updated January 15, 2005
![[Large]](pe-monoclock-1.gif){kind=link}
![[Large]](pe-monoclock-2.gif){kind=link}
![[Large]](pe-monoclock-3.gif){kind=link}
![[Large]](pe-monoclock-4.gif){kind=link}
![[Large]](pe-monoclock-5.gif){kind=link}