Texas Instruments

• Desktop line

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

• LCD-1985-1990

Model: TI-308 elle
Battery: LR1130              
Adapter:   
Year: 1988
Chip: 
Info:

• LCD-1985-1990

Model: TI-309 Nuance
Battery: Solar               
Adapter:   
Year: 1989
Chip: 

Info: The box states: An elegant hinged case calculator designed for women. A foldable compact protective case which fits easily into the purse or handbag.

The TI-309 Nuance was available in two colors, soft beige and purple.

• LCD-1991-1999

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

• LCD-1985-1990

Model: TI-31 lcd
Battery: solar
Adapter: 
Year: 1987
Chip: Toshiba T6974S
Info: At first glance the TI-31 added just a few conversions and statistical functions to the TI-30 Challenger.