Model: TI-1780 cardBattery: solarAdapter: Year: 1983Chip: Info: LCD 1980 - 1984
Model: TI-1784 cardBattery: solarAdapter: Year: 1985Chip: Info: LCD 1985 - 1990 Made in Taiwan
Model: TI-1785 cardBattery: solarAdapter: Year: 1985Chip: Info: LCD 1985 - 1990
Model: TI-1786 cardBattery: solarAdapter: Year: 1990Chip: Info: LCD 1985 - 1990 Made in Taiwan
Model: TI-1788Battery: 2 x LR44Adapter: Year: 1981Chip: Info: LCD 1980 - 1984 Made in Taiwan
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