DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-82 Advanced
| Date of introduction: | April 2015 | Display technology: | LCD dot matrix |
| New price: | Display size: | 8 * 16 characters | |
| Size: | 7.5" x 3.3" x
0.85" 190 x 84 x 22 mm3 |
||
| Weight: | 7.4 ounces, 208 grams | Serial No: | 1074005717 |
| Batteries: | 4*AAA + SR44 (35mA) | Date of manufacture: | mth 07 year 2017 (A) |
| AC-Adapter: | Origin of manufacture: | Philippines (L) | |
| Precision: | 14 | Integrated circuits: | ASIC: TI REF 84PLCR/TA1 Flash: MX29LV800 Display: Novatek NT7564H |
| Memories: | |||
| Program steps: | 24k Bytes, 300k Bytes Flash ROM | Courtesy of: | Joerg Woerner |
Texas
Instruments France introduced in 2014 with the TI-82 Plus the successor of the
TI-82 Stats.fr sporting the housing of the
20th-Century TI-83 Plus. Missing the Press-to-Test
feature with a graphing calculator for the 2014-2015 school year was slightly
short sighted, the TI-82 Plus was already discontinued in 2015 and replaced with
this TI-82 Advanced based on the TI-84 Plus. Don't
miss the TI-83 Plus.fr introduced in 2013 and based on the
TI-84 Plus Silver Edition.
Dismantling
this TI-82 Advanced manufactured in July 2017 by
Kinpo Electronics, Inc. in the
Philippines reveals a
design very similar to the
TI-84 Plus but adding an LED with a small light pipe for the visual Press-to-Test feedback - known
from the TI-84 Plus T released in 2015, too for the Netherlands. Please remember that the Prototypes of the
TI-83
Plus.fr were based on the recent TI-84
Plus. We located on the printed circuit board (PCB) of the TI-82 Advanced
three main components:
| • TI REF 84PLCR/TA1: Z80 microprocessor, RAM, USB-Port and supporting logic • Macronix MX29LV800: 1M Bytes Flash ROM • Novatek NT7564H: Single-chip 64*120 pixel display driver |
The
picture on the right gives an enhanced view of the ASIC that clocks the internal Z80
microprocessor with 15 MHz and incorporates the RAM, USB-Port and logic. Learn more about the Hardware Architecture of TI’s Graphing Calculators. Please
notice the smaller package of the new TI REF 84PLCR/TA1 ASIC compared with the
previous TI REF 83PLUSB/TA2 or TI REF 84PLUSB/TA3 found in the TI-84 Plus family
manufactured between 2004 and 2007.
Recently members of the Graphing Calculator Programming community under the lead
of Xavier Andréani made a very interesting discovery:
| • All TI-84 Plus / S.E. with the TA2 or TA3 ASIC have access
to 128k Bytes RAM. • All TI-84 Plus / S.E. with the TA1 ASIC have access to only 48k Bytes RAM using the same assembly commands. |
This
TI-82 Advanced manufactured in July 2017 makes use of
one Macronix Flash ROM with 1M Bytes capacity, please notice that the otherwise
identical TI-84 Plus T uses a Flash-ROM with 2M Byte capacity.
The
driver circuit of the LC-Display was traditionally manufactured by Toshiba for
Texas Instruments' graphing calculators. This TI-82 Advanced manufactured in
July 2017
shows with the Novatek NT7564H
a one-by-one replacement. It is just a bare chip
mounted on a flexible piece of circuit board attached between the display and
the main PCB.
ROM-Versions:
5.0.0.0028 (January 20, 2015, actual in May 2020)
You can check the ROM version of your TI-82 Advanced using the following key sequence and reading the number on your screen:
