This listing is for a vintage Little Professor toy from Texas Instruments in 1981. It is in used condition - looks great on the front, but has "ADAM" in small letters scratched on to the lower rectangle. The battery compartment is clean it turns on with batteries. I am not sure of the functionality as I was not able to figure out what to do with it... not sure if it isn't working properly, or some buttons don't work, or I don't know how to use it. See pics for more details.