TI-84 Plus series

TI-84 Plus The original TI-84 Plus was released in 2004 as an upgrade to the TI-83 Plus. Its keyboard layout and user interface are identical to that of its predecessor, and it is backwards compatible with older TI-BASIC programs. Despite this, it has significantly improved hardware; its CPU, the Zilog Z80, is 2.5 times as fast as the one in the TI-83 Plus, its display is of a higher contrast, and it has three times as much flash memory. The TI-84 Plus introduced a real-time clock and a mini-USB data transfer port. The USB port is USB On-The-Go compliant, allowing the TI-84 Plus to connect to—and exchange data with—another calculator; Texas Instruments calls this feature Communication Link. The TI-84 Plus can also connect to a computer to transfer programs and files using Texas Instruments' proprietary program, TI-Connect. An all-white variant of the TI-84 Plus was introduced in 2023. Currently, the calculator is still in production and issued by schools around the United States, required by some institutions, and seen as the standard option by many; critics argue that the enduring prevalence of the TI-84 Plus—which is considerably less powerful than a smartphone, yet still costs more than some—has hindered innovation in calculator technology and is a result of monopoly. They also claim that Texas Instruments exploits this by keeping prices at a level roughly twice that of competing calculators. TI-84 Plus Silver Edition The TI-84 Plus Silver Edition (SE) was introduced on January 7, 2004 as an upgrade to the TI-83 Plus Silver Edition. It features 24 KB of user-available RAM; the calculator technically has 128 KB—48 KB in newer revisions—but the operating system was never updated to utilize it. It has 1.5 MB of user-accessible ROM, more than three times the 480 KB in the TI-84 Plus. It came preloaded with 30 applications. The Silver Edition has interchangeable faceplates, and new, colored faceplates were available for purchase at Texas Instruments' online store. It was discontinued in 2015, making the TI-84 Plus the only currently produced calculator in the series. TI-84 Plus C Silver Edition The TI-84 Plus C Silver Edition (C SE) was released in 2013 as the first Z80-based Texas Instruments graphing calculator with a color screen. It introduced a 320-by-240 pixel color screen, a modified version of the TI-84 Plus's 2.55MP operating system, and a removable 1200 mAh rechargeable lithium-ion battery. The C Silver Edition would not be Texas Instruments' last foray into color-screen calculators for the student market; the TI-84 Plus CE was introduced—with an upgraded CPU—two years later. The C Silver Edition was discontinued a few months after the launch of the CE. ==Software==

Programs and applications The TI-84 Plus series supports both programs and applications. Programs are written by the user; some programs, like those written in TI-BASIC, are interpreted during execution and can thus be edited directly on the calculator. Applications (also called Flash applications) are stored in the calculator's ROM; these tend to be more complex than standard programs, and are usually from Texas Instruments themselves. Officially, two programming languages are supported: TI-BASIC and Z80 assembly. However, there are unofficial, community-developed languages—such as the Axe Parser—made specifically for the TI-84 Plus series. The series has a significant hobbyist following, and a wide variety of official and community-made software has been developed for it over the years. These include video games, math programs, educational tools, and graphing software. In 2011, an unofficial web browser, Gossamer, was released for the platform, and in recent years, programmers have created internet-based programs like a ChatGPT client, graphical ray-casting software, and a neural network that incorporates primitive artificial intelligence. These developments have attracted the attention of technology publications. Operating systems There have been eight operating system releases for the monochrome-display calculators in the series, which include the TI-84 Plus, the Silver Edition, and their respective variants. In addition, calculators with an older bootloader can run custom operating systems like KnightOS. Monochrome C Silver Edition Linking software Texas Instruments develops the TI-Connect linking software, which hosts a number of sub-programs (called software tools) to manage TI-84 Plus series calculators. Texas Instruments' newer program for the TI-84 Plus CE series calculators, TI-Connect CE, is backwards-compatible with the TI-84 Plus series; it can be used in place of TI-Connect. TI-Connect is compatible with Windows XP and above, However, one of these programs—known as TiLP—is more recent and supports Windows, macOS, and Linux. ==Technical specifications==

Texas Instruments has released a variety of equipment for its graphing calculators. Even though only the Calculator-Based Ranger 2 features a USB port, the TI-84 Plus series can connect to older Texas Instruments equipment using its serial link port. Presenter The Presenter, introduced in 2003, is an alternative piece of calculator screen display equipment; instead of using a proprietary display panel and overhead projection system like the ViewScreen, the Presenter connects to an existing display device—such as a television or interactive whiteboard—using either an RF modulator or composite video input. Since it uses the same communication protocol as the ViewScreen, it is compatible with both the Presentation Link Adapter and ViewScreen variants of the TI-84 Plus. Calculator-Based Laboratory The Calculator-Based Laboratory (CBL), a general purpose data acquisition unit, was introduced in 1994. It collects information from several types of modular sensors by Vernier, Inc.—at a speed of up to 10,000 data points per second—and sends it to a calculator via link cable, which records and graphs the data. It also features a display and basic firmware of its own for standalone data processing. In 1999, the CBL was superseded by the CBL 2, which lacked a display for standalone use but introduced flash memory and increased the single-channel sample rate to 50,000 data points per second. Calculator-Based Ranger The Calculator-Based Ranger (CBR), introduced in 1997, is, like the CBL, a data acquisition unit, but features a single built-in sonic sensor instead of multiple unique modular ones. It measures distances by emitting and receiving an ultrasonic pulse, and then calculating the distance traveled by performing a speed-of-sound calculation using its microprocessor. It then stores this information in a list—which can contain up to 512 data points—and transfers that to a calculator via link cable. The CBR was replaced by the CBR 2 in 2004, which added a USB port for faster data transfer with the TI-84 Plus series. Orion Talking Graphing Calculator The Orion TI-84 Plus Talking Graphing Calculator is a detachable accessory for the TI-84 Plus produced by Texas Instruments in collaboration with Orbit Research and the American Printing House for the Blind. It adds general accessibility features—such as speech navigation—to the TI-84 Plus, and is able to read out the contents of the calculator's display using speech synthesis. It uses its own power source, a rechargeable battery, instead of drawing power from the calculator itself. == Variants ==

TI-84 Plus EZ-Spot The TI-84 Plus EZ-Spot series, also known as the School editions and the School Property editions, are variants of TI-84 Plus series calculators produced by Texas Instruments and only made available for schools to purchase. They have the words "School Property" emblazoned on their faceplate and are accented yellow; this easily distinguishable design was chosen in an effort to prevent theft. The TI-84 Plus Silver Edition and C Silver Edition also have EZ-Spot variants. TI-84 Plus Silver Edition VSC The TI-84 Plus Silver Edition ViewScreen Calculator, also known as the TI-84 Plus Silver Edition VSC, is a variant of the TI-84 Plus Silver Edition intended for educational use. It has a display output that allows it to connect to a ViewScreen. TI-84 Plus T The TI-84 Plus T is a variant of the TI-84 Plus; it was introduced in 2015 by Texas Instruments, exclusive to the Netherlands. This variant is similar to the rest of the series, but features an LED to indicate whether or not the calculator is in press-to-test mode. The hardware of the TI-84 Plus T is similar to the TI-84 Plus Silver Edition, but the TI-84 Plus T is no longer able to run the assembler. TI-84 Pocket.fr and Plus Pocket SE The TI-84 Pocket.fr was introduced in 2011 as a miniaturized variant of the TI-84 Plus for the French market. It was the first region-specific calculator in the TI-84 Plus series. == Gallery ==

File:TI-84 Plus calculator HS1.jpg|TI-84 Plus File:TI-84 Plus buttons.jpeg| TI-84 Plus at an angle File:TI-84 Plus.jpeg|TI-84 Plus at another angle File:TI-84 Plus IO.jpeg|Link port and USB port File:TI-84 Plus on dark background.JPG|TI-84 Plus Silver Edition File:TI-84 Plus Pocket SE.jpg|TI-84 Plus Pocket SE File:TI-84 Plus.jpg|Display with "Hello Wikipedia!" File:TI-84 Plus calculator HS2.jpg|Display with specifications File:TI-84 Plus 4 2019-01-27.jpg|TI-84 Plus, batteries, and cover File:Texas Instruments TI-84 Plus calculator - back.jpg|Back with battery cover File:TI-84 Plus batteries.jpeg|Battery compartment File:TI-84-Plus-Silver-Edition.jpg|Custom blue faceplate applied File:TI-84 Plus in package unopened.jpg|Retail package File:TI-84 Plus screenshots.jpg|Screen captures, graph and application menu File:Programma Horner.png|Screen captures of a TI-BASIC program in the built-in IDE File:TI-84 Portal.jpg|Community-made game, clone of Portal ==See also==