Last week I got a full size keyboard for TI-83, TI-84, TI-89, ect. online. It's pretty nice, I can use it for taking notes and math. I don't really recommend it for programming it though, it doesn't have a button for PRGM or any other buttons other than a standard keyboard. Here's a picture of it: https://pcbx.us/commando/aorh.jpg
Wow, that's really cool, I'll have to get myself that. Though it seems for programming it would be a little annoying having to use the caps-lock/shift button to capitalize commands such as Pt-On and Pxl-Off.
I don't believe that you would be able to type them anyways. Commands are tokens, and cannot be spelled out. :P
With the 68k calcs, you type them manually or select them from a menu, but functions are not case sensitive. So for example, CyclePic is the same as typing cyclepic.
47%? Take a look and try to imagine how cool 100% will be. This has won zContest 2011 and made news on TICalc. This compromise between Assembly and BASIC parses like BASIC and is fast like assembly. Grammer 2
Anything you type in will be treated as data, not a command. The letters in commands are just like images that represent longer chunks code which is called for from the calculator OS.