Ben, If it has a Samsung KS0066 chip on the module, it is a HD44780 compatible module, just search for info on character LCDs, or see the (pathetic 2) links on one of my pages, as a starting point:- http://ourworld.compuserve.com/homepages/steve_lawther/charlcd.htm For everybody else - Character LCD test code and 4bit interface cct debugger, also on this page Hope it helps, Steve Lawther PS - could someone who is not on a NON-MIME mail program confirm, direct to me (not to the PICLIST), that there is no MIME garbage with this mail? - thanks.(here comes the flood!) ______________________________ Reply Separator _________________________________ Subject: Samsung lcd Author: MIME:Ben.SUFFOLK@ORANGE.CO.UK at INTERNET-HUSKY Date: 27/08/97 19:15 To: piclist@mitvma.mit.edu cc: Subject: Samsung lcd I have just purchased a samsung lcd 2 line 20 character display (It was cheap from a company that deals with bankrupt stock etc). On the PCB it is marked as SMC - 2024A. Does anybody have a datasheet for it or know how to use it? Regards Ben