More on Amazon.com : http://www.amazon.com/gp/product/B00000JBO3?tag=thefatkidin06-20 <br /> <br />Texas Instruments TI-92 Plus Graphing Calculator <br /> <br />Over 500 KB memory for storing functions programs and data <br />Pretty Print technology displays mathematical expressions as they appear in textbooks <br />QWERTY keyboard and large display real-time rotation of 3-D surfaces <br />Electronically upgradable using flash technology <br />Inputoutput port and cable also supports optional TI-GRAPH LINK
