The inteface and control of a bigger LCD with microcontroller at89s51 is very
simple. I used a LCD of four lines having 80 charachter space on each line (4*80
lcd) sucessfully. The program is written in keil c51 Uv2 and is tested with UV3
also. It works fine. get complete code from here.
http://microcontroller51.blogspot.com/2009/07/interface-of-4-line-lcd-with-8051.\
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