While on a recent visit to London I spent an enjoyable afternoon at the Science Museum. What I found was more sustenance for my computing-fluids obsession. In fact I came across enough fascinating exhibits to fill several blog posts. I'll kick off with a computing-themed post, first covering computing prehistory starting with the Babbage Difference Engines and the Phillips Hydraulic Computer, and moving on to the dawn of supercomputing with the Cray-1.