Texas Instruments

• desktop line

Model: TI-3000
Battery:                
Adapter:  110 volt 
Year: 1972
Chip: TMS0109
Info:  DESKTOP line   

• LCD-1982-1987

Model: TI-34
Battery: solar
Adapter: 
Year: 1987
Chip:  Thoshiba T7988 
Info:  modern LCD  1982 - 1987

• LCD-1991-1999

Model: TI-30X IIs
Battery: solar , CR2025
Adapter: 
Year: 1999
Chip:
Info: modern LCD  1991 - 1999 made in China

• overhead

Model: TI-34 II overhead
Battery: 
Adapter: 
Year:  
Chip: made in China
Info:  The California based company Stokes Publishing Company, Inc. distributes under the label "The Educator®"
calculators optimized for teaching purposes. William T. Stokes filed already July 30, 1991 the US Patent Application U.S. Pat. No. 5,035,502
 with the title "Transparent calculator for overhead projection".

• euro line

Model: TI-31
Battery: 9 volt
Adapter: 
Year: 1978
Chip: TMC0982
Info: EURO line 

• first lcd and slimline lcd

Model: TI-35
Battery: 2 x LR44
Adapter: 
Year: 1981
Chip:  TPO324
Info:  first LCD and slimline LCD          

• data bank

Model: TI-3200 dialer
Battery: 2 x CR2025  
Adapter: 
Year: 1991
Chip: CPU: Toshiba T7915-0108
 RAM: Sharp LH5160    
Info:    

• first lcd and slimline lcd

Model: TI-35 silver
Battery: 2 x LR44
Adapter: 
Year: 1981
Chip:  TPO324
Info:  first LCD and slimline LCD          

• euro line

Model: TI-33
Battery: 9 volt
Adapter: 
Year: 1977
Chip: TMC0984
Info: EURO line 

• desktop line

Model: TI-3500
Battery:                
Adapter:  110 volt 
Year: 1973
Chip: TMS0106
Info:  DESKTOP line