DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-80 ViewScreen™
|Date of introduction:||1995||Display technology:||LCD dot matrix|
|New price:||Display size:||8 * 16 characters|
|Size:|| 6.4" x 2.8" x
162 x 72 x 24 mm3
|Weight:||4.6 ounces, 130 grams||Serial No:||VS 064528|
|Batteries:||2*CR2032 (35mA)||Date of manufacture:||mth 06 year 1995 (C)|
|AC-Adapter:||Origin of manufacture:||Taiwan (I)|
|Precision:||13||Integrated circuits:|| CPU: Toshiba T6M53A
Display: Toshiba T6B79
|Program steps:||7034 Bytes||Courtesy of:||Joerg Woerner|
TI-80 ViewScreen Calculator (VSC) is the teacher version of the standard TI-80.
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.
From a technical point of view the TI-80 VSC is almost identical with the students TI-80. The main difference you notice is a bulgier bottom shell of the calculator housing to accommodate the ViewScreen electronics and connector. Dismantling the TI-80 VSC reveals a small printed circuit board (PCB) with two driver chips connected with a flexible cable to the main PCB of the calculator.
The main features of the TI-80 VSC in a short summary:
|• Graphing of up to 4 functions at one time.
• Parametric graphing to analyze up to three parametric equations.
• One- and two-variable statistical analyses with up to 99 data points.
• Up to 37 programs with a total of 7000 bytes.
From a technical point of view the TI-80 VSC combines the 8-bit hardware architecture known from the Financial Investment Analyst FIA-10 and the enhanced capabilities from the TI-95 Procalc. The TI-80 VSC uses just four main components:
|• Texas Instruments / Toshiba proprietary microprocessor
• Sharp LH5359©1995 - ROM for internal program storage
• Suwa Seikosha SRM2264 - 8k Bytes S-RAM for user program and data
• Toshiba T6B79 - display driver
electronics of the TI-80 is centered around the Toshiba T6M53A
Specific CPU, an ASIC with both an unknown microprocessor and the
necessary glue logic to scan the keyboard and control the two different memory
chips and the display driver.
The graphic display of the TI-80 VSC is connected to a Toshiba T6B79 single-chip display driver mounted on a flexible printed circuit board.
In 1998 the TI-80 was replaced with the TI-73 sporting an increased display size of 64 * 96 dots for better readable characters and crisper graphs.
You can check the ROM version of your TI-80
VSC using the following key sequence and reading the number on your screen:
[MODE] [ALPHA] [S]
Information provided by ticalc.org
and Xavier Andréani.
The TI-80 VSC is permitted (as of September 27, 2007) for use on SAT,
and AP exams but
is not recommended for the AP exam.
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, February 17, 2009. No reprints without written permission.