Welcome to Al Zimmermann's Programming Contests. You've entered an arena where demented computer programmers compete for glory and for some cool prizes. The current challenge is just about to come to an end, but you can peruse the previous contests and prepare for the new one starting next month.
The ternary calculating machine of Thomas Fowler. And electromechanical calculating machines from the 1960s.
Visual Aesthetics in Early Computing (1950-80) - a little look back at plotters and light pens and flow charts, which I found a bit nostalgic. You can watch Lapis, Permutations and Arabesque on YouTube.