DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-82
|Date of introduction:||1995||Display technology:||LCD dot matrix|
|New price:||Display size:||8 * 16 characters|
|Size:||6.8" x 3.1" x 0.85"|
|Weight:||5.6 ounces||Serial No:||38012312|
|Batteries:||4*AAA + CR1620 (35mA)||Date of manufacture:||mth 12 year 1995|
|AC-Adapter:||Origin of manufacture:||Taiwan (I)|
|Precision:||14||Integrated circuits:|| CPU: Toshiba T84C00
ASIC: Toshiba TC14L010
ROM: MX J9533©1995
Display: Toshiba T6A04
|Program steps:||28k Bytes||Courtesy of:||Joerg Woerner|
Texas Instruments changed in 1995 the design of the TI-81, TI-82 and TI-85 slightly, please notice the position of the TI-logo and the color of the type designator.
Already one year later, with the introduction of the famous TI-83, the TI-81 was discontinued.
Early in 1999 the appearance of the
TI-82 was updated
From a technical point of view is this TI-82 manufactured in February 1995 is almost identical with the TI-82 introduced in 1993. Recently we dismantled a TI-82 from 1997 - still no major differences.
The only difference we noted is the ROM (Read Only Memory,
stores the Operating System of the calculator). Instead of the expected Sharp
LH531©94 we discovered a Macronix MX J9533©1995.
Even comparing the printed circuit board of the TI-82 with a TI-81 reveals just minor differences:
|Component||TI-82 (Dec. 1995)||TI-81 (Apr. 1996)|
(Central Processing Unit)
(Application Specific IC)
(Read Only Memory)
|Macronix MX J9533©95
128k Byte ROM
64k Byte ROM
(Random Access Memory)
32k Byte RAM
8k Byte RAM
|Display Driver||Toshiba T6A04||Toshiba T6A04|
driver circuit of the LC-Display is just one bare chip mounted on a flexible
piece of circuit board attached between the display and the main PCB. 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
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.
A special "teacher version" called TI-82
VSC combines the standard TI-82 features with a port to connect to a
ViewScreen panel via a cable. Placing the panel on the overhead projector
enlarges the image of the handheld screen so that each student can follow along.
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 ticalc.org
and Xavier Andréani.
The TI-82 is permitted (as of September 27, 2007) for use on SAT, ACT, PSAT and AP exams.
If you have additions to the above article please email: email@example.com.
© Joerg Woerner, February 8, 2008. No reprints without written permission.