HI Forum Mmebers, I am using Keil for developing a product based on P89C51RD2. I have written many low level routines to interact with the hardware peripheral devices and they are working fine. Now I want to hand over this project for further development to junior engineers. I do not want them to modify core routines, (Safety and privacy of the code). 1.Can I convert my *.c and *.asm files to OBJ/LIB; and just give these OBJ/LIB files to junior engineers so that they can use these OBJ/LIB files in their project and develop programs? If yes, then how can this be achieved? Any links to Application Notes,etc. 2.Will making OBJ work for my requirement or making the LIB will work for my requirement? 3.What changes do I have to make so that my current instructions can be used to convert the file to OBJ/LIB? Thanking you in advance. Mr. Kiran V. Sutar.