Since, in a way, graphlinks have to do with Ti-Basic programs. I was wondering if a 1N914 type diode would work on a parallel link. This was purchased at Radio Shack and the Catalog number is 276-1620. == Visit my Website at http://www.geocities.com/Augusta/9822/tifiles/ticalc.html _________________________________________________________ DO YOU YAHOO!? Get your free @yahoo.com address at http://mail.yahoo.com