hello,
you must try first to disect or testing the output of pin D1,D2,D3
if there is an equivalent digital combinations for the desired characters
1.
say " R" try to test pins 17,16,15,13, for D's output
2.
next say if you have proper capacitance in the debounce input
3. then also check the enable pin's out put
after that ..if you are certain of those combinations try it now to LCD
try to visit this site pls..
http://www.parallax.com/dl/docs/cols/nv/vol4/col/nv97.pdf#search='74c922'
basic stamp programming would seem similar to pIC877
thanks
Cyrix-Cracker
Added after 2 minutes:
hello,
you must try first to disect or testing the output of pin D1,D2,D3
if there is an equivalent digital combinations for the desired characters
1.
say " R" try to test pins 17,16,15,13, for D's output
2.
next say if you have proper capacitance in the debounce input
3. then also check the enable pin's out put
after that ..if you are certain of those combinations try it now to LCD
try to visit this site pls..
http://www.parallax.com/dl/docs/cols/nv/vol4/col/nv97.pdf#search='74c922'
basic stamp programming would seem similar to pIC877
thanks
Cyrix-Cracker