The TI-82 is a

graphing calculator Graphing Calculator may refer to: * Graphing calculators, calculators that are able to display and/or analyze mathematical function graphs * NuCalc, a computer software program able to perform many graphing calculator functions * Grapher, th ...

made by Texas Instruments. The TI-82 was designed in 1993 as an upgraded version of and replacement for the TI-81. It was the direct predecessor of the TI-83. It shares with the TI-85 a 6

MHz The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), often described as being equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose formal expression in terms of SI base u ...

Zilog Z80 The Zilog Z80 is an 8-bit computing, 8-bit microprocessor designed by Zilog that played an important role in the evolution of early personal computing. Launched in 1976, it was designed to be Backward compatibility, software-compatible with the ...

microprocessor A microprocessor is a computer processor (computing), processor for which the data processing logic and control is included on a single integrated circuit (IC), or a small number of ICs. The microprocessor contains the arithmetic, logic, a ...

. Like the TI-81, the TI-82 features a 96×64 pixel display, and the core feature set of the TI-81 with many new features.

Features

The TI-82 is powered by the same processor that powered its cousin, the TI-85, a 6

. This was an improvement over the TI-81's 2 MHz Z80 processor. In addition, the available RAM was increased more than tenfold – from 2400

byte The byte is a unit of digital information that most commonly consists of eight bits. Historically, the byte was the number of bits used to encode a single character of text in a computer and for this reason it is the smallest addressable un ...

s to 28734

s (slightly more than the TI-85). Some of the more notable improvements of the TI-82 over the TI-81 include the following: the addition of a link port to enable programs and other data to be transferred between two calculators or between a calculator and a computer; the addition of two new graphing types – polar and sequence, the addition of a new type of data – the list, the expansion of the size limit of matrices to 50×50, and the (unintentional) addition of the ability to program the calculator in

assembly language In computing, assembly language (alternatively assembler language or symbolic machine code), often referred to simply as assembly and commonly abbreviated as ASM or asm, is any low-level programming language with a very strong correspondence bet ...

. The last of these provided a significant boost in interest in the programmability of the calculator, as the use of assembly language (as opposed to Texas Instruments' own TI-BASIC) enabled significantly more performance and flexibility with the programs able to be used on the calculator. Carried over from the TI-81 is the TI-82's power source – four AAA batteries and one CR1616 or CR1620

lithium Lithium (from , , ) is a chemical element; it has chemical symbol, symbol Li and atomic number 3. It is a soft, silvery-white alkali metal. Under standard temperature and pressure, standard conditions, it is the least dense metal and the ...

backup battery (to ensure programs stored in RAM persist when the AAA batteries are being changed).

Design changes

The TI-82 was redesigned twice, first in 1999 and again in 2001. The 1999 redesign introduced a design very similar to the TI-73, TI-83 Plus, and the TI-89. It introduced a more contoured body and eliminated the sloped screen that has been common on TI graphing calculators since the TI-81. The 2001 redesign (nicknamed the TI-82 "Parcus")TI-82 Parcus – DATAMATH
/ref> introduced a slightly different shape to the calculator, eliminated the glossy screen border, and reduced cost by streamlining the printed circuit board to four units.

TI-82 STATS

An enhanced version of the TI-82, the TI-82 STATS, was first released in 2004 in Europe. There are several improvements, most notably the statistical features as the name would suggest. In addition, it featured numerical differentiation and integration, together with complex numbers, financial functions and other improvements. In specification terms, it is virtually identical to the TI-83.

Technical specifications

; CPU :

CPU, 6

; RAM : 32 KB, 28734

s user-accessible ; OTP-ROM : 128 KB non-upgradable ; Display : Text: 8 Rows × 16 characters : Graphics: 96×64 pixels, monochrome ; I/O : Serial link port ; Power : 4 AAA batteries plus 1 CR1616/ CR1620 lithium battery for

backup In information technology, a backup, or data backup is a copy of computer data taken and stored elsewhere so that it may be used to restore the original after a data loss event. The verb form, referring to the process of doing so, is "wikt:back ...

; Integrated

programming language A programming language is a system of notation for writing computer programs. Programming languages are described in terms of their Syntax (programming languages), syntax (form) and semantics (computer science), semantics (meaning), usually def ...

s : TI-BASIC, Assembly (via an undocumented feature)

References

External links