Texas Instruments TI-82 (Black)

Date of introduction:  June 2009 Display technology:  LCD dot matrix
New price:  EUR 79.83 Display size:  8 * 16 characters
Size:  7.2" x 3.2" x 0.85"
 183 x 82 x 22 mm3
Weight:  6.0 ounces, 171 grams Serial No:  2477061764
Batteries:  4*AAA + CR1620 (35mA) Date of manufacture:  mth 05 year 2009 (G)
AC-Adapter:   Origin of manufacture:  China (P)
Precision:  14 Integrated circuits:  ASIC: TI REF TI-738X
 Flash: S29AL004D70
 Display: Toshiba T6K04
Program steps:  24k Bytes, 160k Bytes Flash ROM Courtesy of:  Joerg Woerner 

TI-82STATS_FR_P0509G_P1.jpg (620412 Byte)Texas Instruments introduced in 2004 with the TI-82 STATS in France a Graphing calculator with some improvements compared to the original TI-82 Parcus. About two years later, in July 2006, with the TI-82 a Graphing calculator was nationalized for the French market.

In 2009, together with the introduction of the new entry-level Graphing calculator, the design of the original TI-82 was changed to darker colors.

Dismantling this TI-82 manufactured in May 2009 reveals no surprises, the printed circuit board (PCB) is identical with its predecessor.

The picture on the right gives an enhanced view of the ASIC "TI-REF TI-738X" that clocks the Z80 microprocessor with 6 MHz and incorporates the 32k Bytes RAM and some supporting logic. Learn more about the Hardware Architecture of TI’s Graphing Calculators. The ASIC was probably manufactured by Toshiba and recalls us the TI-83 Plus Silver Edition with the "TI-REF 83PL2M/TA2" ASIC and the early TI-84 Plus with its "TI-REF 83PLUSB/TA2" ASIC. This ASIC "TI-REF TI-738X" was obviously used in the revised TI-73 Explorer, too.

The TI-82 is based - like most Graphing calculators introduced after the TI-73 - on Flash technology, we located in this TI-82 a Macronix 29LV400 Flash ROM device with 512k Bytes capacity for programs and data.

A component not easily detected on the printed circuit board (PCB) of the TI-82 is the driver circuit of the LC-Display. It is just a bare Toshiba T6K04 chip mounted on a flexible piece of circuit board attached between the display and the main PCB. 

We prepared together with fellow collector Xavier Andréani a comprehensive comparison of entry level graphing calculators, to shed some light on the different specifications of the TI-82 and TI-83 / TI-83 Plus based products.

A serial port of the calculators allows the connection to the Calculator-Based Laboratory system CBL, its successor CBL 2, the Calculator-Based Ranger CBR and its successor CBR 2.

Texas Instruments France introduced in 2008 the TI-83 and in 2009 the based on this TI-82 Don't miss the TI-82 Plus introduced in 2014.


TI-82STATS_FR_P0509G_OS.jpg (105633 Byte)1.11fr7

You can check the ROM version of your TI-82 using the following key sequence and reading the number on your screen:

[mode] [alpha] [S]

Information provided by Xavier Andréani.  

horizontal rule

If you have additions to the above article please email:

© Joerg Woerner, September 23, 2009. No reprints without written permission.