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Additional Pictures 

 

This TI-83 Plus VSC Prototype calculator was manufactured in December 1998 by Inventec Corporation in
Taiwan. It uses a redesigned bottom shell of the housing to accommodate the ViewScreen connector.

This TI-83 Plus VSC Prototype calculator is powered by four AAA-sized cells and a CR1620 backup battery.

This TI-83 Plus VSC Prototype doesn't hold a battery, just a test wire.

 
A small, carefully shielded PCB (printed circuit board) hosts some drivers between
the ViewScreen connector and the flexible cable reaching to the display PCB.

The additional PCB with two additional driver circuits and a connector for the external ViewScreen.


 
The PCB of this TI-83 Plus VSC Prototype manufactured in December 1998 looks more or less identical to the later TI-83 Plus calculator
and is centered around a Zilog Z80 CPU, an ASIC and two Memory chips for program and data.

Close-up view of the TI REF 9815455 ASIC.

The display driver Toshiba T6A04 of the TI-83 Plus VSC Prototype manufactured December 1998.


If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, August 27, 2020. No reprints without written permission.