a have a query, is there a difference between a pic16f877a and a pic18f877-20i/p ??
my local store doesnt have the first one and i wonder if i can make the same project with the second microcontroller or if it has a significant difference.
The 'a' version was just a later silicon revision, there may be very slight differences, but these will be explained in the migration document at Microchip if there are any.