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Thanks to the wonders of television, we also knew in 1966 that the future belong to tablets. Here, we see Lt. Uhura of Star Fleet using what presumably is an iPad 2255—better known to true Star Trek fans as a Personal Access Display Device (PADD).
What's that you say? That's a fixed part of the bridge? Nope. Here's another PADD being carried about by some poor slob wearing a red-shirt and we all know what that means!
And, we can see tablets were still being used in the Star Trek universe in the 1990s with Deep Space Nine.