TI-99/4A was my first computer as well. I still have two of them, and they still work as well as they did in the '80s. I graduated to an Apple ][GS which I still have as well, although it needs some TLC before attempting to boot it so as not to let out the magic smoke.
I recently got a new battery for my N9000, still works fine other than the radio modem not having a cell to talk to anymore, now I just need to update the system.
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