could any provide me with the Keil c library files serial.h lcdrout.h
Note that the OP didn't even state a toolset - let alone a specific board from a specific manufacturer!
Therefore there is very little reason to beleive that this is the actual "serial.h" file that he enquired about!
A quick search of my Keil install folder shows at least three other files also called "serial.h"
This really goes to show how pointless it is to just ask for a filename like "serial.h" with no other details!!
And it doesn't seem that the OP is really interested anyhow!
:-(