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 again.



From a technical point of view is this TI-82 manufactured in February 1995 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, it 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) CPU

(Central Processing Unit) Toshiba T84C00

(Z80 CPU) Toshiba T84C00

(Z80 CPU) ASIC

(Application Specific IC) Toshiba TC14L010

Support Logic Toshiba TC14L010

Support Logic ROM

(Read Only Memory) Macronix MX J9533©95

128k Byte ROM Sharp LH5359©93

64k Byte ROM RAM

(Random Access Memory) Epson SRM20256

32k Byte RAM Epson SRM2264

8k Byte RAM Display Driver Toshiba T6A04 Toshiba T6A04

Learn more about the Hardware Architecture of TI’s Graphing Calculators. The 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 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.



ROM-Versions:

19.0

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.

Exam acceptance:

The TI-82 is permitted (as of September 27, 2007) for use on SAT, ACT, PSAT and AP exams.