TI83 series
From Academic Kids

The TI83 series graphing calculators are manufactured by Texas Instruments. They have been, and still are, very popular among college students.
Contents 
The initial model: TI83
TI_83.jpg
TI83
Released in 1996, it is one of the most used graphing calculators for students (especially those in middle school or higher). In addition to the functions present on normal scientific calculators, the TI83 includes many features, including function graphing, polar/parametric/sequence graphing modes, statistics, trigonometric, and algebraic functions. Although it does not include as many calculus functions, applications (for the TI83 Plus  see below) and/or programs can be downloaded from various websites that allow for them.
The TI83 was replaced by TI with the TI83 Plus calculator in 1999, which included Flash ROM, enabling the device's operating system to be updated if needed, or for large new Flash Applications to be stored, accesssible through a new (Apps) key. The flash rom can also be used to store user programs and data. In 2001 the ante was raised with the TI83 Plus Silver Edition, which featured approximately nine times the available Flash ROM, and over twice the processing speed (15 MHz) of a standard TI83 Plus, all in a translucent, iridescent grey case.
The original TI83 is itself an upgraded version of the TI82.
An interesting historical note: the TI83 was the first calculator in the TI series to have built in assembly language support. (The TI85 and TI82 had ASM support, but only after sending a specially constructed (hacked) memory backup.) The support could be accessed through a hidden feature of the calculator. Users would write their assembly (ASM) program on their computer, compile it to a hexadecimal form, and send it to their calculator as a program. The user would then execute the command "Send(9prgmXXX)", and it would execute the program. Successors of the TI83 replaced the Send(9) backdoor with a lesshidden Asm() command.
TI83 Plus
The TI83 Plus is a graphing calculator made by Texas Instruments, designed in 1999 as an upgrade to the TI83. The TI83 Plus is one of TI's most popular calculators. It uses a ZiLOG Z80 microprocessor running at 6 MHz, a 96x64 monochrome LCD screen, and 4 AAA batteries as well as backup CR1616 or CR1920 battery. A link port is also built into the calculator. The main improvement over the TI83 however was the addition of 160KB of Flash ROM, which allowed for OS bugfix upgrades, program archiving, and support for advanced flash applications (Apps).
Designed for high school, it contains all the features of a scientific calculator as well as function, parametric, polar, and sequential graphing capabilities, an environment for financial calculations, matrix operations, oncalculator programming, and more. Symbolic manipulation (differentiation, algebra) is not built into the TI83 Plus, but is available as an addon by Detached Solutions (http://www.detachedsolutions.com). It can be programmed using a language called TIBASIC, which is similar to the BASIC computer language. Programming may also be done in TI Assembly, made up of Z80 assembly and a collection of TI provided system calls. Assembly programs run much faster, but are more difficult to write.
A small but active community of thirdparty developers exists and a large archive of programs for the calculator can be found at ticalc.org (http://www.ticalc.org).
In 2001, TI released the TI83 Plus Silver Edition, which was basically the same calculator, but with a 15 MHz processor and 1.5 MB of Flash ROM.
As of Spring 2004, the TI83 Plus has been officially replaced by the TI84 Plus, which offers a 15 MHz processor and roughly three times the memory of the TI83 Plus.
TI83 Plus Silver Edition
The TI83 Plus Silver Edition is a newer version of the TI83 Plus calculator, released in 2001. Its enhancements are 1.5 megabytes of FLASH ROM, a dualspeed 6/15 MHz processor, 96 kilobytes of additional RAM, a translucent silver case, and more applications preinstalled. It also includes a USB link cable in the box. It is almost completely compatible with the TI83 Plus; the only problems that arise are with games that may run too fast on the silver edition. The key layout is the same.
As of Spring of 2004, the TI83 Plus Silver Edition has been replaced by the TI84 Plus Silver Edition. They feature the same processor and the same amount of Flash ROM, but the TI84 Plus Silver Edition features a built in USB port, clock, and changeable faceplates.
Successor: TI84 Plus
The TI84 Plus line was introduced in mid2004 as a further update to the TI83 line; the TI83 is still available for purchase, but support for it is dwindling. Despite its fancy name, the TI84 plus series is not vastly improved over the TI83 plus series. The main improvements of the TI84 Plus and TI84 Plus Silver Edition are a fancy case with changeable faceplates, more speed and memory over the TI83 and TI83 Plus, a builtin clock, and a builtin USB port for easy computer connectivity. The operating system and math functionality remain the same.
See also
External links
Tech
 Features of the TI83 (http://education.ti.com/us/product/tech/83/features/features.html), TI83 Plus (http://education.ti.com/us/product/tech/83p/features/features.html), and TI83 Plus Silver Edition (http://education.ti.com/us/product/tech/83pse/features/features.html)
 WikiTI (http://wikiti.denglend.net/) is a wiki documenting the hardware and operation system of the TI83 Series and the TI84 Series of calculators.
Games
 Ticalc.org (http://www.ticalc.org)  The biggest resource of calculator files on the Internet
 CalcGames.org (http://www.calcgames.org/)  A major calculator site
 Calcwebzine.com (http://www.calcwebzine.com/)  Game reviews and upcoming projects
Programming groups
 Cemetech  Programs, support, and forums (http://www.Cemetech.net/)
 Detached Solutions (http://www.detachedsolutions.com/)
 Maxcoderz (http://www.maxcoderz.com/)
 TIFreakWare (http://tifreakware.calcgames.org/)
 United TI (http://www.unitedti.org/)
 Electroshock (http://www.electroshock.darwinmach.net/)
 Revolution Software (http://www.calcwebzine.com/revsoft/)
Other
 TiNews.net (http://www.tinews.net/)  Calculator news and RSS feeds