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Texas Instruments TI-89 Titanium ViewScreen™

Date of introduction:  Jan.7, 2004
 Available: August 2004
Display technology:  LCD dot matrix
New price:  $149.99 (SRP 2008) Display size:  100 * 160 pixels
Size:  7.7" x 3.3" x 0.85"
 195 x 84 x 22 mm3
   
Weight:  8.3 ounces, 234 grams Serial No:  2644000333
Batteries:  4*AAA + SR44 (35mA) Date of manufacture:  mth 07 year 2009 (J)
AC-Adapter:   Origin of manufacture:  China (P)
Precision:  14 Integrated circuits:  CPU: MC68SEC000
 ASIC:  TI-REF680TG0204R02
 Flash: LH28F320
Memories:      
Program steps:  188k Bytes, 2.7M Bytes Flash-ROM Courtesy of:  Xavier Andréani

The TI-89 Titanium ViewScreen Calculator (VSC) is the teacher version of the TI-89 Titanium. It connects with a special port to a ViewScreen panel via a cable. Placing the panel on the overhead projector enlarges the image of the handheld screen so that each student can follow along.

From a technical point of view the TI-89 Titanium VSC is almost identical with the students TI-89 Titanium. The first difference you notice is a slightly changed bottom shell of the calculator housing to accommodate the ViewScreen connector.

Dismantling the TI-89 Titanium VSC manufactured in July 2009 reveals a printed circuit board (PCB) known as TI-89 Hardware Version 4 and sports just five main components:

Processor: The processor located on the Printed Circuit Board (PCB) is the low-power version of the Motorola MC68EC000 labelled MC68SEC000.

ASIC: This impressive Integrated Circuit with the designation TI-REF680TG0204R02 integrates not only the glue logic of the design and USB interface but even 256k Byte RAM.

Memory: This TI-89 Titanium VSC manufactured in July 2009 sports a Sharp Flash-ROM LH28F320 with a capacity of 2M*16 bits.

Display Driver: The TI-89 Titanium VSC uses two different display drivers for the 100 * 160 pixels display.

An additional PCB is connected with a short piece of flat-cable to the display board. This PCB basically buffers the signals of the LC-Display and feeds them to the external ViewScreen connector.

A serial port of the calculators allows the connection to the Calculator-Based Laboratory system CBL, its successor CBL 2, the Calculator-Based Ranger CBR and its successor CBR 2. The optional full-sized QWERTY Keyboard introduced already in 2002 matches with a new cradle even with the TI-89 Titanium VSC.

Don't miss the colorful slide cases developed for the TI-84 Plus Silver Edition, they fit on the TI-89 Titanium VSC, too.

Texas Instruments announced in 2006 the TI-Nspire, this long-awaited calculator family arrived finally July 2007 in the store shelves.

Hardware-Versions:

The two different hardware revisions of the TI-89 Titanium VSC are known as HW3 and HW4. You can check the HW version of your TI-89 Titanium VSC using the following key sequence and reading the number on your screen:

[F1] [A]

Disassembling both HW3 and HW4 (manufactured in May 2006 and later) revealed only minor differences in the revision of the ASIC. 
In the same month Texas Instruments introduced in France a new design of the TI-89 Titanium with a new black case.

ROM-Versions:

3.00 (March 24, 2004)
3.01 (October 7, 2004)
3.10 (July 18, 2005, actual in May 2013)

Advanced Mathematics Software v2.09

You can check the ROM version of your TI-89 Titanium VSC using the following key sequence and reading the number on your screen:

[F1] [A]

Information provided by ticalc.org and Xavier Andréani.

Exam acceptance:

Since the TI-89 Titanium VSC lacks a QWERTY keyboard it is permitted (as of May 30, 2013) for use on SAT, PSAT and AP exams. Calculators with computer algebra system (CAS) functionality are not allowed on ACT exams.

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

© Joerg Woerner, Mary 31, 2013. No reprints without written permission.