I was looking at the Graphing Calculator Comparison page (http://www.ti.com/calc/docs/gmtrx.htm) and I noticed that the TI-85 & TI-86 can do octal operations but the TI-89 can't (neither can the 92+). Why is this? -- Bryan Rabeler <brabeler@ticalc.org> File Archives the ticalc.org project - http://www.ticalc.org/