It lives!
Noticed that this uses an AT89C2051 microcontroller and some research discovered that alternative open source code for it is available! So, some spare chips are on order so that I can play with the code and change what this thing can do.
Apparently the open source code keeps better time, and code to make it be a stopwatch exists too.
#AT89C2051
#SH-E879
#Electronics
#Microcontroller
#digitalclock