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:||54728770|
|Batteries:||4*AAA + CR1620 (35mA)||Date of manufacture:||mth 04 year 1997|
|AC-Adapter:||Origin of manufacture:||Taiwan (I)|
|Precision:||14||Integrated circuits:|| CPU: Toshiba T84C00
ASIC: Toshiba TC14L010
Display: Toshiba T6A04
|Program steps:||28k Bytes||Courtesy of:||Joerg Woerner|
Instruments changed in 1995 the design of the TI-81, TI-82 and
please notice the position of the TI-logo and the color of the type designator.
The featured calculator was manufactured in April 1997, two years before a
cosmetical redesign of the
TI-82 in 1999.
From a technical point of view is this TI-82 manufactured in 1997 is almost identical with the TI-82 introduced in 1993.
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 (ROM-Version 18.0) we discovered a LH531©1995
Even comparing the printed circuit board of the TI-82 with a TI-81 reveals just minor differences:
|Component||TI-82 (Apr. 1997)||TI-81 (Apr. 1996)|
(Central Processing Unit)
(Application Specific IC)
(Read Only Memory)
128 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 Toshiba T6A04
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: firstname.lastname@example.org.
© Joerg Woerner, February 18, 2009. No reprints without written permission.