DATAMATH CALCULATOR MUSEUM |
Additional Pictures
This TI-73 with the date code I-0199 was manufactured by Inventec in Taiwan in January 1999. |
The main printed circuit board
(PCB) of the TI-73 manufactured in 1999 is
completely different to the previous TI-83. The Toshiba T6C79 Application Specific CPU was replaced by a two-chip approach based on a discrete Zilog Z-80 CPU and a Texas Instruments TI REF 9815455 ASIC. |
The PCB of this TI-73 manufactured
beginning of 1999 with the classic Z80 based architecture. The Flash ROM AM 29F400 stores up to 512k Byte Program and the SRAM Epson SRM2B256 sports 32k Byte capacity. |
This TI-73 hosts the ASIC TI REF 9815455 used later in the TI-83 Plus design. |
The display driver Toshiba T6A04 of the TI-73 manufactured in January 1999. |
If you have additions to the above article please email: joerg@datamath.org.
© Mark Bollman and Joerg Woerner, August 3, 2008. No reprints without written permission.