can i know whats the differences between a 4 bit LCD and a 8 bit LCD?
4 bit LCD - for PIC16F84?
8 bit LCD - for PIC16F877?

is it possible to use PIC16F877 to interface a 4 bit LCD??

i bought an LCD of model PHILIPS HD44780. is the spec list the same as any model of HD44780?

can u recommend me some websites that has sample assembly code for LCD displays?? is there any in this website??

 

They are exactly the same, you can access the LCD in either 4 or 8 bit mode, 8 bit is slightly faster, but 4 bit saves you I/O pins.

HD44780 is an Hitachi number, and is the industry standard for text LCD modules.

For suitable PIC code check my PIC tutorials which give reliable proven code using 4 bit mode and either software or hardware timing. There seems very little reason to use 8 bit mode, except it makes the code slightly simpler.

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