The legend in the deaf community is that we started it, with teletypewriters. Way before 1982. I don't know if that's true or not -- I didn't start using a tty until 1984 or so. I do know that I picked up emoticons from tty usage, and was using them in email before many other people I knew were.
(A friend of mine just asked me what those "D"s in my emails to her meant!! I was like eh? Then she said yeah, like a colon and then a D -- what's that mean?
I'm fairly confident that many text abbreviations (brb et al) originated with tty's. I have a list of abbreviations somewhere that I taught in an ASL class in the early 90's -- I remember that the (hearing) people who took the class were mystified by them. (They're all standard now.)