The PIC can scan the individual elements of the clock’s display. On the PIC’s output side, he used a couple of analog switches to control the ‘Fast’, ‘Slow’, and ‘Display Alarm/Time ...
See photos in the gallery at the top of this story. When the clock out front was completed, it quickly became a popular attraction. In October of 1963, Birmingham News columnist Walling Keith ...
On Thursday morning, the switch was flipped on the Clock of Nations, and its capsules representing 12 nations opened and the ...