Casio fx-9860GII Graphing Calculator， Black<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> REF/RREF function， random integers， unit conversion， new types of regressions， chi-squared GOF function， 9 new probability functions， pie charts &amp; bar graphs， graph X=f(Y) and much more </span></li><li><span class="a-list-item"> 1500 KB Flash ROM </span></li><li><span class="a-list-item"> Built-in eActivity and spreadsheet applications </span></li><li><span class="a-list-item"> Icon-based menu adds to overall intuitive usability </span></li><li><span class="a-list-item"> Direct connection to Casio projectors </span></li><li><span class="a-list-item"> Data transfer from unit-to-unit and from unit-to-computer </span></li><li><span class="a-list-item"> New LCD backlight for superior visibility </span></li><li><span class="a-list-item"> New manager software available </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51XQz24CyGL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51pFMjWdTJL.jpg" noproxy>