Texas Instruments' TI-84 Plus is the proud successor to the very popular TI-83 Plus. The TI-84 Plus has made some solid improvements over its predecessor in a variety of areas. It still has all of the same powerful calculations that made the TI-83 Plus so popular. It can be occasionally expensive, but its features make it well worth the price. The TI-84 Plus can handle all sorts of calculations and problems, ranging from calculus, to [...] Read more »