Showing posts with label vintage computing. Show all posts
Showing posts with label vintage computing. Show all posts

Wednesday, September 8, 2010

Other Uses of CRT Screens

Did you know that in the 40's CRT tubes were sometimes used as RAM? Strange, but true! I found this fascinating when I stumbled upon it on Wikipedia:

William's Tube on Wikipedia

It would use the photon beam to "write" binary on the phosphors, and then read it back. The charge on the phosphors lasts for a fraction of a second, and you can erase one by writing the block next to it. Hope everyone finds this as cool as I did!

EP