even i m new to the world of microcontrollers. i m making a project with at89c51. but after learning about programming the uc i think its better to change to at89s52. even one professoe suggested the same to me.

will it be ok to do it?

are these 2 chips compatible with each other (i have completed hardware part n done some testing of software with at89c51)?

also, i want to make n hardware modules and put them on lan?
for this purpose which uc is best?
what actually is can?

plz' help me with all these problems.