Texas Instruments

• LCD-1985-1990
• RCI

Model: TI-68 prototype
Battery:  CR2032
Adapter: 
Year: 1985
Chip: CPU: Toshiba T9948A   
Info: Calculator donated by Massa Gennaro in 2023 during the 2nd edition "the story with Texas Instruments" in Rieti, (World Chili Pepper Fair). This was a prototype with transparent case, built in the Rieti factory.

• graphing

Model: TI-73
Battery: 4 AAA + CR1620 
Adapter: 
Year: 1999
Chip: Zilog Z84C0008 
Info: GRAPHING

• graphing

Model: TI-80
Battery: 2 x CR2032
Adapter: 
Year: 1996
Chip: CPU: Toshiba T6M53A ROM: LH5359©1995 RAM: SRM2264 Display: Toshiba T6B79   
Info: Taiwan

• graphing

Model: TI-81
Battery: 4 AAA + CR1620 
Adapter: 
Year: 1991
Chip: T6A49Atoshiba
Info: GRAPHING

• graphing

Model: TI-81
Battery: 4 AAA + CR1620 
Adapter: 
Year: 1993
Chip: T6A43toshiba
Info: GRAPHING