Art
At the Indian ice cream place on Valencia between 16th and 17th Streets, there's a picture drawn in the concrete of the sidewalk outside. The picture contains two transistors and three resistors; it appears to be a schematic for some kind of TTL logic gate.
Update: I'm now guessing that it's an RTL NOR gate, but I have to go back and take a look at to make sure. My reference is Mano, Digital Design, p. 410.
