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Additional Pictures 

 

This TI-85 ViewScreen calculator w/o Date code was manufactured
by Inventec in Taiwan in June 1992.

Please notice the bulkier housing to accommodate the additional electronics.

The printed circuit board (PCB) of the TI-85 VSC is identical with its sibbling but added a small connector
 on the display board to a piggy-back PCB with the additonal driver circuits.

The piggy-back PCB with just one additional driver circuits and a connector for the external ViewScreen.

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

This early TI-85 VSC 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@datamath.org.

Joerg Woerner, February 23, 2009. No reprints without written permission.