Texas Instruments

• LCD-1982-1987

Model: TI-2600 personal banker
Battery: solar
Adapter: 
Year: 1987
Chip: Toshiba     
Info:

• LCD-1982-1987

Model: TI-30 stat
Battery: 3 x LR44
Adapter: 
Year: 1985
Chip:  CD4557A
Info:  modern LCD  1982 - 1987

• majestic line

Model: TI-30
Battery: 9 volt or RK2
Adapter: AC9132 or AC9182
Year: 1976
Chip: TMC0981           
Info: MAJESTIC line 

• LCD-1991-1999

Model: TI-30 X
Battery: solar
Adapter: 
Year: 1994
Chip:  T6m38 Toshiba
Info:

• first lcd and slimline lcd

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

• LCD-1991-1999

Model: TI-30 xa
Battery: 2 x LR44
Adapter: 
Year: 1997
Chip:  T6m79 Toshiba
Info: modern LCD  1991 - 1999

• 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          

• LCD-2000-2017

Model: TI-30 xs
Battery: solar , CR2032
Adapter: 
Year: 2007
Chip:
Info: modern LCD  2000 - 2017

• LCD-1982-1987

Model: TI-30 slr plus
Battery: solar
Adapter: 
Year: 1987
Chip:  T6974s Toshiba
Info:  modern LCD  1982 - 1987

• overhead

Model: TI-30 XS overhead
Battery: 
Adapter: 
Year: 2007
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".