About LCD compatibility

which LCD is compatible with Arduino mega? can i use any one type of LCD ?

You can use many lcd displays for the Mega, that is not different than for the Arduino Uno.

When you buy an LCD without attached pcb board, or take an LCD out of an device, and you know nothing about it, then it might be hard to get it working.

mukeshmalhi:
which LCD is compatible with Arduino mega? can i use any one type of LCD ?

A bit of research is necessary… Find the display type you need, determine the controller chip (usually in the description or eBay heading), find an appropriate library for the LCD+chip set, then verify the library runs on the Mega2560 without conflicts. Using the forum search will be helpful…
For example, if I needed color TFT, found it on eBay, identified the chip as ILI9341, then I would search this forum for the ILI9341 and start reading what others were doing.

Of course, you can buy-in to a shield from Adafruit or Spartfun that will guarantee some level of compatibility, but you may still have conflicts down the road with sensors or other peripheral devices.

Ray