Manchester's Small Scale Experimental Machine 'Baby' was officially put through its paces on this day sixty years ago.
With a storage of 128 bits of information, it was way down in the evolutionary tree of computing, but at the time it was able to perform quite complex mathematical processes.
Using 1500 valves, it needed a large room, and I should think it was probably a bit warm in there when fired up
See
HERE
And have a go at programming it yourself
_www.cs.manchester.ac.uk/Digital60/Baby/
Llew