A graphing calculator made by Texas Instruments. The TI-84 is capable of the same functions as the TI-83 Plus, but differs from the TI-83 Plus in several ways.

The 84 Plus has more ROM/Flash memory than the 83 Plus and a slightly better display. This is useful for storing flash applications. The 84 Plus also has a face-lifted appearance, and is slightly bulkier in design. It also costs more than the 83 Plus.

Both calculators are capable of graphing functions and equations, solving matrices, and other mathematical functions, making them useful for Algebra, particularly higher level Algebra. Both are also capable of being programmed to do various tasks, and, most importantly to high school students, they can be used to play BASIC and Flash games (ie Space Invaders, Falldown, Uncle Worm, etc.)
Person 1: Hey man, I've got math class next period... do you have a graphing calculator I could use?

Person 2: Yeah, but you better give it back. <hands calc to friend>

Person 1: You've got an 84 a TI-84 Plus? Sweet. Lemme see what games you have.

Person 2: Hey, I thought you needed it for math class...

Person 1: Well, duh. What do you think I do in math all period?
by killerfiller November 16, 2006
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A major global conflict resulting in the deaths of roughly 12,000,000,000 civilians and soldiers, mainly focused in the United States as well as many other English speaking countries. It broke out near early December of 12020, it also resulted in the near collapse of the United States, and was short lived as it suddenly stopped on December 25th.
"Woah, do you remember World War 84?"
by notarealperson111 December 21, 2020
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A YouTuber. He beat Punch Out! Wii and avenged his girlfriend.
Me : Yo man do you watch Channel 84 Winnipeg?
Them : no
Me : *cocks gun*
by Lick my dick and balls bitch January 27, 2019
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It keeps math from being a pain in the ass!
The TI-84 Plus is the Aryan race of calculators.
by Senator Assface November 19, 2006
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Mean 2 sex moves equals a pregant woman.
dude I totally did a69+84=5 on that girl and no she's 5 (Pregnant).
by BrentCarson June 10, 2010
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Look at those people playing TI-84 Plus CE games! They should just get phones!
by I'm more lit than you July 7, 2017
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The calculator that a bunch of kids got when they figured out you can download a bunch of games on it, so they can play games in math class.
Dude! Check out my new calculator! It's the TI-84 Plus CE. It let's you do whatever you want on it!
by ConvenientAnimations April 30, 2020
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