PIC uC TIME DELAYS: Simulation VS Implementation

[styx1.618]

Is there any difference between time delays simulated in Proteus and those in hardware implementation of PIC uC ? How much overhead we can expect due to compiler,etc ?? Btw, I'm using PIC18F4550, if specifications are important.

 

[thunderboympm]

using timer, i think there is no difference between simulation and implimentation. But using of simple delays it may be differ

 

[Raady Here]

both will be same, they dont make difference