In this episode, Thomas looks at an oddity from the late 80s/early 90s: a “battleship” keyboard from AT&T, the 56K. It sounds like the name of a modem more than a keyboard, but we digress. As one would expect of a vintage 122-key terminal keyboard, it’s rather large. (This is not to be confused with an earlier review of the AT&T 56K that had magnetic separation switches.)
It uses buckling springs and an overall design are similar to, but subtly different from, IBM’s own famous design it used in the Model M keyboard. They are similar enough, at least, to make it difficult to judge whether AT&T made these boards itself, or if the company had IBM make them. Thomas shows the differences between the designs to conclude who manufactured this keyboard.
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