Category Archives: TI-84

Video: Upgrade to TI-84+ OS 2.55

In February, OS 2.53 was released by Texas Instruments for the TI-84+. This is unquestionably the best set of upgrades ever issued for the calculator.  If you’re a longtime 84 plus user, you’ll feel like you’ve been given a new calculator for free.  This video illustrates the improvements and guides you through the upgrade. More recently, a less major update, OS 2.55 was issued, but everything in this video still applies.

The update installs a whole new set of menus on your 84.  Fractions now look like fractions, without having to open an app.  You also have the ability to work with summations, calculus templates, matrices, and logs of different bases just as they appear in a textbook. Another less obvious but hugely helpful upgrade is the ability to use the arrow keys to travel up and down the stack of previous calculations.  This feature is long overdue, but better late than never.

CONFIRMED: Texas Instruments Will Release Color TI-84+ C

CONFIRMED: Texas Instruments Will Release Color TI-84+ C

UPDATE: If you are interested in the TI-84+C, please check out my TI-84+C Review. I was fortunate to receive a pre-release device from TI for review purposes. After word broke last week of a possible new graphing calculator from Texas Instruments, I reached out to TI, asking if they’d be willing to make any onContinue Reading

TI-84 vs. TI-Nspire CX Review

Whether you’re in the market for your first graphing calculator, or replacing an old friend, it’s no small investment. Most of the popular graphers on the market today cost over $100.Continue Reading

Texas Instruments releases new OS for TI-84, 2.55 MP

Texas Instruments just released a new OS for the TI-84 plus. The release of 2.55 MP seems to indicate TI is not abandoning the TI-84 for the TI-Nspire just yet.Continue Reading

Texas Instruments official: TI is not discontinuing TI-84+ SE in North America

UPDATE: Texas Instruments contacted me to put to rest rumors that the TI-84+ SE is being discontinued, at least in North America.Continue Reading

Video lesson: Definite integrals on the TI-84

This video lesson covers how to find a definite integral on a TI-84 both within the home screen and within a graph.Continue Reading

Video lesson: Basic graphing features of the TI-84

This video lesson covers and introduction to graphing on the TI-84. Inputting equations, tracing functions, and adjusting the graph window, and using zoom features are all explained.Continue Reading

Video review: TI-84 vs. TI-Nspire buying guide

Our video review of the TI-84 and TI-Nspire.Continue Reading

Video lesson: Imaginary and complex numbers on the TI-84+

This video lesson includes a brief explanation of complex numbers and a tutorial on how to use your TI-84 to do calculations involving complex numbers. Continue Reading

Video lesson: Solving a system of equations with the TI-84+

When you are given multiple equations and multiple variables, a graphing calculator can be a lifesaver. New versions of the TI-84 come with a pre-installed app the makes these problems a snap. This video lesson covers solving systems equations by the elimination, or linear combination method, before covering how to use the TI-84 to solve.Continue Reading