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.
|
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, August 3, 2008. No reprints without written permission.