DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-82 Plus (France EVT)
|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:||K-EVT-123|
|Batteries:||4*AAA + 2*LR44||Date of manufacture:||mth 01 year 2014 (C)|
|AC-Adapter:||Origin of manufacture:||China (K)|
|Precision:||14||Integrated circuits:|| ASIC: TI-REF TI-738X
|Program steps:||24k Bytes, 160k Bytes Flash ROM||Courtesy of:||Xavier Andréani|
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 with the serial number K-EVT-123 (K for Kinpo electronics, Inc. and EVT for Engineering Validation Test) reveals a very familiar looking design and reminds us with its 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 internal 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 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 Bytes Flash ROM, this units sports a Macronix MX29LV400 chip 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!
Don't miss the next evolution of the TI-82 Plus.
1.19 (January 16, 2006, actual in May 2015)
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] 
Information provided by ticalc.org
and Xavier Andréani.
If you have additions to the above article please email: email@example.com.
© Joerg Woerner, May 30, 2015. No reprints without written permission.