Model: Barbie Battery: 9 volt AC adapter: Year: 1985 Chip: TMS0972 Info:A lot of LED-calculators used the TMS0972 calculator chip developed for the TI-1200. The cutest ever was this Barbie calculator marketed by Concept 2000.
Model: Little Leaners Battery: 9 volt AC adapter: Year: 1985 Chip: TMS0972 Info:A lot of LED-calculators used the TMS0972 calculator chip developed for the TI-1200.