Great article. One clarification: > In 1948, Manchester Baby, the first electronic programmable stored-program computer, had a Cathode Ray Tube (CRT) display t

Great article. One clarification: > In 1948, Manchester Baby, the first electronic programmable stored-program computer, had a Cathode Ray Tube (CRT) display that allowed users to peer directly into its 32-bit word memory. This worked because the CRT itself - what was known as a ‘Williams Tube’ - was memory. There were four CRTs, three of which were memory (one for RAM, two for registers) and the other was a display device. This is because to be used as memory, the CRT needed a metal plate in front of it. So the Baby put the same data on both the memory and display CRTs, one of which was mounted in its front panel. https://en.wikipedia.org/wiki/Williams_tube https://en.wikipedia.org/wiki/Williams_tube