Hi. I have been working on a project based on the AT89S51 micro-controller. I want to simulate this project on Proteus but the problem is that Proteus does not have the AT89S51 as a component. Can anyone please suggest the name of another Microcontroller that i can replace it with, without having to change any of the code. What about the AT89C51???? Can it be used in place of the 89s51.