How old is the segmented digit display?

[Eric Rechlin]

(12-07-2023 11:17 PM)Peter Klein Wrote:  Fourteen segments can display all upper and lower case Latin letters with the exception of lower case "s."

There are a lot of letters that end up being quite unattractive (not just "s", but "q", "x", "y", and "z" as well, among others to lesser degrees) if you attempt to make them lowercase on a 14-segment display, but all are possible. I suspect that's why HP didn't even attempt to support lowercase on the 41 until the Halfnut, and even the Halfnut's lowercase support is well-hidden and only accessible with a special ROM module (but they did manage to make all characters distinct).