DATAMATH  CALCULATOR  MUSEUM

Additional Pictures 

 

The TI-89 VSC uses a redesigned bottom shell of the housing to accommodate the ViewScreen connector. 
This calculator with the date-code I-0100 was manufactured by Inventec in Taiwan in January 2000.

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

The main PCB of the TI-89 VSC is identical with the TI-89 but we notice
the additional connector on the display PCB for the ViewScreen.

The PCB of this TI-89 VSC manufactured early in 2000 could be identified as Hardware Version 2 of the four
known (as of August 2008) TI-89 versions. Main components are the Motorola MC68EC000 microprocessor,
an ASIC with support logic, two S-RAM chips with 128k Byte capacity, each and a 1M*16 Flash-ROM

ZOOM-Images of both the Motorola MC68SEC000 microprocessor and the TI-REF 200C040 ASIC.

 

This small PCB hides under the shielding foil and buffers the signals between the
TI-89 ViewScreen Calculator and the ViewScreen panel.

The display drivers of the TI-89 VSC were obviously manufactured by Sharp, Japan.


horizontal rule

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

© Joerg Woerner, August 3, 2008. No reprints without written permission.