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Texas Instruments TI-82 Plus (France)

Date of introduction:  June 2014 Display technology:  LCD dot matrix
New price:   Display size:  8 * 16 characters
Size:  7.2" x 3.2" x 0.80"
 182 x 81 x 20 mm3
   
Weight:  6.0 ounces, 171 grams Serial No:  1015019402
Batteries:  4*AAA + 2*LR44 Date of manufacture:  mth 02 year 2014 (C)
AC-Adapter:   Origin of manufacture:  China (K)
Precision:  14 Integrated circuits:  ASIC: TI-REF TI-738X
 (220C080FG102)
 Flash: MX29LV400
 Display: NT7564H
Memories:      
Program steps:  24k Bytes, 160k Bytes Flash-ROM Courtesy of:  Michel Zwawiak

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 the 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 Plus manufactured in February 2014 by Kinpo electronics, Inc. reveals a very familiar looking design and reminds us with it's chip-on-board ASIC about the TI-83 Plus manufactured in April 2007 by Nam Tai Electronics, Inc..

Please notice the two LR44 backup batteries, previous TI-83 Plus calculators made use of one CR1620 battery.

The picture on the right gives an enhanced view of the ASIC that clocks the Z-80 microprocessor with 6 MHz and incorporates the 32k Byte RAM and some supporting logic. The ASIC makes use of chip-on-board technology and without destroying the calculator we can't tell the manufacturer. We assume that Nam Tai uses the "TI-REF TI-738X (220C080FG102)" silicon for the chip-on-board assembly.

The operating system of the calculator is stored in a 512k Byte Flash-ROM, this units sports a Macronix MX29LV400 in a traditional package.

Working through the menus of the TI-82 Plus starts with a big surprise - the operating system is 100% identical with the TI-83 Plus.fr introduced in June 2008 and even reports a "TI-83 Plus" message!   

ROM-Versions:

1.19 (January 16, 2006, actual in February 2009)

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

[2nd] [MEM] [1]

Information provided by ticalc.org and Xavier Andréani.  

 

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If you have additions to the above article please email: joerg@datamath.org.

© Joerg Woerner, May 30, 2015. No reprints without written permission.