Additional Pictures 


This early TI-85 with the Date code I-1092 was manufactured by
Inventec in Taiwan in October 1992. 

The PCB (printed circuit board) of this TI-85 manufactured  
in October 1992 looks very similiar to the first TI-81 introduced in 1990.

The main components of the TI-85: Toshiba T6A43 Application Specific CPU, Toshiba TC541001 OTP-ROM
and Suwa Seikosha SRM20256 RAM. 

This early TI-85 graphing calculator makes use of three display drivers :
Two T6A39 column drivers and one T6A40 row driver.

If you have additions to the above article please email:

Joerg Woerner, February 20, 2009. No reprints without written permission.