Casio fx 83gtplus scientific calculator product description the fx83 is the no1 best selling scientific calculator in the uk gfk data therefore it is the one to havethis new version takes it on a stage furtherit can be used in schoolcollege amp university and is approved by the governmentit comes with a hard case so it will survive most of the knocks it may getfx 83gtplus has all the features and benefits of the previous versionincluding natural display expression and result appear as