DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-82 Stats.fr
| Date of introduction: | July 2006 | Display technology: | LCD dot matrix |
| New price: | Display size: | 8 * 16 characters | |
| Size: | 7.2" x 3.2" x 0.85" | ||
| Weight: | 5.6 ounces | Serial No: | 2196023352 |
| Batteries: | 4*AAA + CR1620 (35mA) | Date of manufacture: | mth 06 year 2006 |
| AC-Adapter: | Origin of manufacture: | China (S) | |
| Precision: | 14 | Integrated circuits: | ASIC: TI-REF TI-738X Flash: S29AL004D70 Display: Toshiba T6K04 |
| Memories: | |||
| Program steps: | 28k Bytes | Courtesy of: | Joerg Woerner |
Texas
Instruments introduced with the TI-82 STATS in
France a Graphing calculator with some improvements compared to the original TI-82 Parcus.
In 2006, when the TI-82 STATS went into sale in some other European countries like Austria, Germany, Switzerland, and United Kingdom the French market received a nationalized version with the TI-82 Stats.fr name plate. Known from the earlier TI-Collège, the keys (e.g. entrer), notations and even the menus were changed to French language to simplify the use by younger students.
Dismantling
the TI-82 Stats.fr reveales a big surprise! The printed circuit board (PCB) was
dramatically changed compared to the TI-82 STATS and even the 32k Bytes S-RAM
dropped.
We know a similiar evolution from the TI-83 Plus to the TI-84 Plus with only 3 main Integrated Circuits left:
| Component | TI-82 Stats.fr | TI-84 Plus |
| ASIC (Application Specific IC) |
TI-738X Z-80 CPU, RAM, USB |
TI-REF84PLUSB/TA3 Z-80 CPU, RAM, USB |
| Flash-ROM (Read Only Memory) |
Spansion 29AL004 512k Byte Flash-ROM |
Fujitsu 29LV800 1M Byte Flash-ROM |
| Display driver |
Toshiba T6K04 Single-chip 64*128 pixel |
Toshiba T6K04 Single-chip 64*128 pixel |
The
picture on the right gives an enhanced view of the ASIC that clocks the Z-80
microprocessor with 15 MHz and incorporates the RAM, USB-Port and logic.
Please notice that later TI-84 Plus sports the TI-REF84PLUSB/TA3 designation on
the ASIC (Picture provided by Daniel Los. Thank you!).
A
component not easily detected on the printed circuit board (PCB) of the TI-84
Plus is the driver circuit of the LC-Display. It is just a bare chip mounted on
a flexible piece of circuit board attached between the display and the main
PCB.
ROM-Versions:
unknown
You can check the ROM version of your TI-82
STATS using the following key sequence and reading the number on your screen:
