Texas Instruments

• Later Scientific Desktop
• donated

Model: TI-30 D
Battery: 2 x AA
Adapter: 
Year: 1982
Chip:  TP0456 (CD4565)
Info:  I must thank the family of Massimo Di Pietro, former Texas Instruments employee of the Cittaducale (Rieti) office, in particular his daughter Francesca and her husband Antonio who donated many databooks, calculators and personal paper material of their father Massimo to our ODV. A thousand thanks

• LCD-1985-1990
• donated

Model: TI-30 galaxy
Battery: LR44
Adapter: 
Year: 1985
Chip: Toshiba T6975S 
Info: Thanks to my friend Paolo Maistrello who sent me this calculator donated by Giovanni Flammini. 

• First lcd and Slimline lcd

Model: TI-30 II
Battery: 2 x LR44
Adapter: 
Year: 1983
Chip:  CD4565  
Info: first LCD and slimline LCD 

• First lcd and Slimline lcd

Model: TI-30 lcd
Battery: 2 x AA
Adapter: 
Year: 1980
Chip:  TP0320-4 or CD3202   
Info: first LCD and slimline LCD

• Majestic line
• TMC0981

Model: TI-30 LED
Battery: 9 volt or RK2
Adapter: AC9132 or AC9182
Year: 1976 Price: Lire 19.000 + 14 % iva
Chip: TMC0981           
Info: In the photo below, the test calculator used in the Rieti plant to test the TMC0981 chips. From an advertisement of the time! The most Famous. The TI-30 scientific calculator is more famous because it is the best-selling in the world (10 million units). In fact, no other calculator, at the same price, can give you the same performance at the same quality level. With the TI-30 you have the 8-digit display. The AOS (algebraic operating system) to set the expressions in the same sequence in which you write them, 15 levels of parentheses, memory, trigonometric functions, plus with the security of TI assistance even after a one year warranty!

Here's a nice display for the famous TI-30 LED. They could have inserted a small wafer into this PCB and then covered it with resin or soldered the integrated circuit, the TMC0981.