Question:

Why does my TI-89 only display fractions, not decimals?

Answer:

The reason your TI-89 is only display fractions is because it is either not set in the right mode or there is something wrong with the motherboard. The TI-89 and the TI-89 Titanium are graphing calculators developed by Texas Instruments.

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Coordinates: 32.909256°N 96.751054°W / 32.909256; -96.751054 / 32°54′33″N 96°45′04″W Texas Instruments Inc. (TI) is an American company that designs and makes semiconductors, which it sells to electronics designers and manufacturers globally. Headquartered at Dallas, Texas, United States, TI is the third largest manufacturer of semiconductors worldwide after Intel and Samsung, the second largest supplier of chips for cellular handsets after Qualcomm, and the largest producer of digital signal processors (DSPs) and analog semiconductors, among a wide range of other semiconductor products, including calculators, microcontrollers and multi-core processors. Texas Instruments is among the Top 20 Semiconductor producing companies in the world.

Texas Instruments was founded in 1951. It emerged after a reorganization of Geophysical Service. This company manufactured equipment for use in the seismic industry as well as defense electronics. TI began research in transistors in the early 1950s and produced the world's first commercial silicon transistor. In 1954, Texas Instruments designed and manufactured the first transistor radio and Jack Kilby invented the integrated circuit in 1958 while working at TI's Central Research Labs. The company produced the first integrated circuit-based computer for the U.S. Air Force in 1961. TI researched infrared technology in the late 1950s and later made radar systems as well as guidance and control systems for both missiles and bombs. The hand-held calculator was introduced to the world by TI in 1967.

Computing

Computers can be classified, or typed, many ways. Some common classifications are summarized below. For others see Category:Classes of computers.

The TI-89 and the TI-89 Titanium are graphing calculators developed by Texas Instruments. They are differentiated from most other TI graphing calculators by their computer algebra system, which allows symbolic manipulation of algebraic expressions—equations can be solved in terms of variables, whereas the TI-83/84 series can only give a numeric result.

The TI-89 is a graphing calculator developed by Texas Instruments (TI) in 1998. The unit features a 160×100 pixel resolution LCD screen and a large amount of flash memory, and includes TI's Advanced Mathematics Software. The TI-89 is one of the highest model lines in TI's calculator products, along with the TI-Nspire. In the summer of 2004, the standard TI-89 was replaced by the TI-89 Titanium.

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Coordinates: 32.909256°N 96.751054°W / 32.909256; -96.751054 / 32°54′33″N 96°45′04″W Texas Instruments Inc. (TI) is an American company that designs and makes semiconductors, which it sells to electronics designers and manufacturers globally. Headquartered at Dallas, Texas, United States, TI is the third largest manufacturer of semiconductors worldwide after Intel and Samsung, the second largest supplier of chips for cellular handsets after Qualcomm, and the largest producer of digital signal processors (DSPs) and analog semiconductors, among a wide range of other semiconductor products, including calculators, microcontrollers and multi-core processors. Texas Instruments is among the Top 20 Semiconductor producing companies in the world.

Texas Instruments was founded in 1951. It emerged after a reorganization of Geophysical Service. This company manufactured equipment for use in the seismic industry as well as defense electronics. TI began research in transistors in the early 1950s and produced the world's first commercial silicon transistor. In 1954, Texas Instruments designed and manufactured the first transistor radio and Jack Kilby invented the integrated circuit in 1958 while working at TI's Central Research Labs. The company produced the first integrated circuit-based computer for the U.S. Air Force in 1961. TI researched infrared technology in the late 1950s and later made radar systems as well as guidance and control systems for both missiles and bombs. The hand-held calculator was introduced to the world by TI in 1967.

The TI-Nspire product line is a series of graphing calculators developed by Texas Instruments. This line currently includes the TI-Nspire, TI-Nspire CAS, TI-Nspire CX and TI-Nspire CX CAS. There are models aimed for Chinese market, named as TI-Nspire CM-C, TI-Nspire CX-C, TI-Nspire CM-C CAS, TI-Nspire CX-C CAS. There is also software available for Windows and Mac OS X that act in similar ways to the calculators and allow the user to create compatible files. This software either requires a license or can only be used for a limited time. However, Texas Instruments also provides a separate software that can be used for an unlimited time without a license but only allows file transfers and not emulation of the calculator. In 2010, Texas Instruments updated the calculators to the Touchpad versions which come with the Nspire or Nspire CAS computer software and support optional rechargeable batteries. In 2011, TI announced two new models of the TI-Nspire series: Nspire CX and Nspire CX CAS. The main new features are the color screen, rechargeable battery and thinner design.

The TI-Nspire series is completely different from the previous versions of the Texas Instruments's calculators. Because TI wanted the calculator to feel more familiar for new users, the TI-Nspire uses a user interface that is more similar to PCs than regular calculators. It also handles documents in a similar way to PCs. The TI-Nspire was the first to be released in two models; a numeric and CAS version. The numeric is slightly similar in features to the TI-84, except with a bigger and higher resolution screen and a full keyboard. The higher resolution screen makes it possible to draw graphs that are more detailed. The feature that the numeric lacks is the ability to solve algebraic equations such as indefinite integrals and derivatives. To fill in the gap of needing an algebraic calculator, Texas Instruments introduced the second model with the name TI-Nspire CAS, where CAS stands for Computer Algebra System. The CAS is designed for college and university students, giving them the feature of calculating many algebraic equations like the Voyage 200 and TI-89, the TI-Nspire acts as a replacement to those models. However, the Nspire does lack part of the ability of programming and installing additional apps that the previous models had, although a limited version of TI-BASIC is supported, along with Lua in later versions. C and assembly are only possible through the jailbreaking program Ndless.

TI-81 Hospitality Recreation


A graphing calculator (also graphics / graphic calculator) typically refers to a class of handheld scientific calculators that are capable of plotting graphs, solving simultaneous equations, and performing numerous other tasks with variables. Most popular graphing calculators are also programmable, allowing the user to create customized programs, typically for scientific/engineering and education applications. Due to their large displays intended for graphing, they can also accommodate several lines of text and calculations at a time.

Programmable calculators are calculators that can automatically carry out a sequence of operations under control of a stored program, much like a computer. The first programmable calculators such as the IBM CPC used punched cards or other media for program storage. Hand-held electronic calculators store programs on magnetic strips, removable read-only memory cartridges, or in battery-backed read/write memory.

Since the early 1990s, most of these flexible handheld units belong to the class of graphing calculators. Before the mass-manufacture of inexpensive dot-matrix LCD displays, however, programmable calculators usually featured a one-line numeric or alphanumeric display.

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