TI 83Model: TI-83 plus
Battery: 4 AAA + CR1620  
Year: 1999
Chip: CPU: Zilog Z84C0008  ASIC: TI REF 9815455 Flash: AM29F400 RAM: SRM2B256 Display: Toshiba T6A04
Info:The TI-83 Plus added Flash technology to the TI-83 Graphing calculator. This technology gives you the flexibility to add calculator software applications and additional functionality beyond math and science, providing long-term value. 



 Wikipedia TI-83 series