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Texas Instruments TI ViewScreen 85

Date of introduction:	1996	Display technology:	LCD dot matrix
New price:		Display size:	8 * 16 characters
Size:	10.0" x 9.7" x 1.5"
Weight:	1 pound 14 ounces	Serial No:	18001279
Batteries:	4*AAA	Date of manufacture:	mth 06 year 1997
AC-Adapter:	AC9201, AC9201E	Origin of manufacture:	Taiwan (I)
Precision:		Integrated circuits:
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.

The TI ViewScreen 85 was introduced in 1996 and connects to the TI-85 VSC (ViewScreen Calculator). 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.

In 2008 three different ViewScreen panels were available:

	Panel 1: 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, 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 2 Toshiba T6A39A column drivers and 1 T6A40A 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.