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 Z-80 microprocessor with 6 MHz and incorporates the 32k Byte RAM and some supporting logic. 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 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.  

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