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TI 83Model: TI-83
Battery: 4 AAA + CR1620  
Adapter: 
Year: 1996
Chip: T6C79  toshiba
Info:From a users point of view the TI-83 is compatible with the TI-82 but added some financial functions and the "official" support of assembly programming. A smart decision, the TI-83 developed itself as a popular programming platform and prepared the tremendous success of the TI-83 Plus.

 

 

 

 Wikipedia TI-83 series