i am trying to interface the lcd with at89s51, all codings are ok and the connections as well...but the lcd is displying nothing..its shows only dark squares. What may be the problem Plz help me out
www.lmgtfy.com
all codings are ok and the connections as well if that was true, this would not be ...but the lcd is displying nothing..
Erik
Is that true?
IF the contrast setting were wrong, couldn't that cause whatever else might be displayed to be undetectable - effectively "hidden" by the "black squares"...?
IF the contrast setting were wrong then this "ok and the connections as well..." would be wrong
Surely, the contrast control could be correctly connected but incorrectly adjusted?
Although I guess it may be more likely that "the connections" just refers to the data interface connections - and the contrast control could be unconnected...
thnx to all of u guys!!! i reconnected the whole circuit and now it worked