I m using switch case for blinking 4 led alternately and my code work fine in proteus 8 but not work in my pic16f676 microcontroller hardware..why? pls help..
This is one of the serious drawbacks of using a simulator - they don't always accurately model a real device.
Guessing - have you got bypass capacitors on the supply lines; have you properly handled the \MCLR\ pin; have you got the oscillator configured correctly.
When you show is the code, please include the config settings.
Susan