Ok...I understand (pretty much) how to take user input to OP1 (in variable form, anyway), and I also understand how to do things to OP1 (square rooting, that stuff), but I am stumped as to how to display what is in OP1, once I am done with the math routines. Also, how do I load things into OP2? Please include the hex codes in your reply. Thanks, Stephen Walasavage