DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-82 ViewScreen™
| Date of introduction: | 1994 | Display technology: | LCD dot matrix |
| New price: | ($120.00 in 2001) | Display size: | 8 * 16 characters |
| Size: | 6.8" x 3.1" x 0.85" 172 x 80 x 32 mm3 |
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| Weight: | 6.7 ounces, 190 grams | Serial No: | VS 272016 |
| Batteries: | 4*AAA + CR1620 | Date of manufacture: | mth 01 year 1995 (Q) |
| AC-Adapter: | Origin of manufacture: | Taiwan (I) | |
| Precision: | 14 | Integrated circuits: | CPU: Toshiba T84C00 ASIC: Toshiba TC14L010 ROM: LH531©1994 RAM: SRM20256 Display: Toshiba T6A04 |
| Memories: | |||
| Program steps: | 27k Bytes | Courtesy of: | Hans Bloemen |
The
TI-82 ViewScreen Calculator (VSC) is the teacher version of the standard TI-82.
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. Don't miss the first generation TI-81
VSC permanently connected to a much smaller Panel.
Four ViewScreen panels were available in 2008:
| • 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 • Panel 4: TI-Nspire, TI-Nspire CAS, TI-Nspire Touchpad, TI-Nspire CAS Touchpad |
As an alternative the TI-Presenter video adapter connects to a TV or other projection device with a video input port.
From
a technical point of view the TI-82 VSC is almost identical with the students
TI-82. The main difference you notice is a two piece bottom shell of the
calculator housing to accommodate the ViewScreen electronics.
Dismantling
the featured TI-82 VSC manufactured in January 1995 by
Inventec Corporation in Taiwan reveals a small printed circuit board (PCB) with two driver chips
connected in a piggy back manner to the display board of the calculator.
The
main electronics of the TI-82 VSC is identical with the students model TI-82.
We located on the PCB a Z80 compatible Toshiba T84C00 CPU, a Toshiba TC14L010 ASIC
(1.0 micron C-MOS gate array with 1,000 usable gates) for the glue logic, a
Sharp LH531©1994 (ROM-Version 18.0) with 64k Bytes capacity and a Suwa Seikosha SRM20256
RAM with 32k Byte capacity for both user programs and user data. Learn more about the Hardware Architecture of TI’s Graphing Calculators.
The
driver circuit of the LC-Display is just one bare Toshiba T6A04 chip mounted on a flexible
piece of circuit board attached between the display and the main PCB.
ROM-Versions:
3*
4*
7*
8.0
10.0
11.0
12.0
15.0
16.0
17.0
18.0
19.0
19.006
You can check the ROM version of your TI-82
VSC using the following key sequence and reading the number on your screen:
