Lego logic gates

This is very cool: Lego logic gates. I spent more time dealing with, doing homework about, and desigining from lower-level compenents the stuff on this page in engineering classes than I care to remember. Those readers who’ve taken any EE or CE course will know what I’m talking about—it seems like RS flip-flops, JK flip-flops, NAND gates, etc., would never die. Of course, they weren’t made out of Legos, but silicon, or, more commonly, they were just on paper.