50 Years of BASIC, the Language That Made Computers Personal
If your TI had the chicklet keypad (which actually looked kind of like your brother's PC jr's keys), it was a 99/4, the 99/4a came later and had a proper looking keyboard in it. I had a 99/4 myself originally, but I swapped it to a 4a soon after through an upgrade program TI offered, primarily due to the better graphics and sprite handling capabilities of the later model--features which were needed to run Parsec!
Commerce Department Pushing For New "Copyright Czar"
Great idea. I nominate Lawrence Lessig!