DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI ViewScreen 85
| Date of introduction: | 1994 | Display technology: | LCD dot matrix |
| New price: | $250.00 (SRP 2008) | Display size: | 8 * 16 characters |
| Size: | 10.0" x 9.7" x
1.5" 254 x 247 x 38 mm3 |
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| Weight: | 29.3 ounces, 830 grams | Serial No: | 18001279 |
| Batteries: | 4*AAA | Date of manufacture: | mth 06 year 1997 (B) |
| AC-Adapter: | AC9201, AC9201E | Origin of manufacture: | Taiwan (I) |
| Precision: | Integrated circuits: | 2*Toshiba T6A39A, T6A40 | |
| Memories: | |||
| Program steps: | Courtesy of: | Joerg Woerner |
The
TI ViewScreen panel connects with a cable to the Texas Instruments Graphing
calculators. Placing
the panel on the overhead projector enlarges the image of the handheld screen so
that each student can follow along. Don't miss the US Patent Application U.S. Pat. No. 5,168,294 with the title “Display demonstration system for providing enlarged projected image of calculator display”
filed already in September 27, 1991.
The TI ViewScreen 85 was introduced in 1994 and connects to the second generation TI-85 VSC (ViewScreen Calculator) and the TI-86 VSC. It was delivered either as the ViewScreen panel package with the power supply and a carrying case or as part of the ViewScreen system including the Graphing calculator. The first generation of the TI-85 VSC was permanently connectred to a much smaller ViewScreen panel.
In 2008 three different ViewScreen panels were available:
| • Panel 1:
TI-73
VSC, TI-73 Explorer VSC, TI-80
VSC,
TI-82 VSC, TI-83 VSC, TI-83 Plus VSC, TI-83 Plus Silver Edition VSC, TI-84 Plus VSC, TI-84 Plus Silver Edition VSC • Panel 2: TI-89 VSC, TI-89 Titanium VSC, TI-92, TI-92 Plus, Voyage 200 • Panel 3: TI-85 VSC (2nd design), TI-86 VSC |
Dismantling
the TI ViewScreen 85 reveals no surprises. A huge, transmissive LCD panel is
connected to three display drivers already known from the TI-81.
The
arrangement of two Toshiba T6A39A column drivers and
one T6A40 row drivers found in
the TI ViewScreen 85 is obvious from the layout of the printed circuit board
(PCB).
The Presentation Link Adapter connects the student versions of the TI-84 Plus family to the ViewScreen panel using the calculator's USB port.
With the phase out of the overhead projectors from the daily life, Texas Instruments developed with the TI-Presenter a perfect replacement for the ViewScreen panels based on modern video technology.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, September 5, 2007. No reprints without written permission.