Caller ID is something many of us take for granted. Our cell phone rings and the caller’s name is immediately displayed. But did you know that it wasn’t until 1982 that caller ID entered our world when Carolyn Doughty, who was employed by Bell Laboratories, filed the patent?
Have you ever wondered what would happen if instead of telling you who is calling, your caller ID gave you the number in code so you had to do math to figure out the caller? The result might just look something like today’s Mysterious Math-Caller ID worksheet!
(Fits Inventions timeline.)
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