@Jasper Yeah, but with a keyboard and BASIC interpreter. It even allowed ? to be used in place of PRINT.
I found on in high school and coded random number games which usually required you to keep the game status on a piece of paper. Darts, baseball, etc. I psuedo-coded each game on paper then keyed it in, and at one point I ran out of ram (keeping different games at different number ranges) and learned of the ? thing. Silly me sold/traded it before I went to college.
The screen is gunked out on my current ebay'd years-ago one. Not sure if it was just time or frozen/heat or what.
@Performa do you have any of the HP clamshells that ran DOS?