Fantin-Latour Still Life

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Initially, however, have memories as we would recognise them.
When the iconic Manchester Baby computer first ran in 1948, it was revolutionary because it stored its programs in the form of RAM. It sounds obvious now, but if you wanted to run a at the time, weeks of rewiring were usually required to make it possible. Baby changed all that. Now you could enter and run new programs in a matter of hours.
Baby's amazing ability was down to an ingenious storage device called the Williams Tube. The memory worked on the principle that when a beam of electrons was fired down a vacuum tube and hit a phosphorescent coating at the other end, small static charges built up at the points where the beam hit the phosphor.
A set of pickup plates in front of the coating then detected the charges. However, because the charges faded quickly, a refresh circuit needed to read which bits were set and use the electron beam to refresh them every few milliseconds. Williams Tubes could store around 1Kb and, although they sound cumbersome, have a modern parallel in today's DRAM chips. These work by storing tiny electrical