Texas Instruments

• desktop line

Model: TI-5200 brown
Battery:                
Adapter:  AC/DC 220 volt -12 volt  
Year: 1978
Chip: TMC1278 
Info:  DESKTOP line 

• desktop line

Model: TI-5220
Battery:      
Adapter:  110 or 220 volt     
Year: 1977
Chip: TMS1309, TMS1372
Info:  DESKTOP line 

• modern desktop

Model: TI-5315
Battery: 
Adapter: AC 110 volt    
Year: 1989
Chip: NEC upd7520
Info: modern DESKTOP built in clock

• LCD-1991-1999

Model: TI-7100
Battery: Solar
Adapter: 
Year: 1991
Chip:             
Info:   

• LCD-1991-1999

Model: TI-7140
Battery: solar
Adapter: 
Year: 1994
Chip: 
Info: