i'm sorry to have made a bad impression and for being rude to the other people reading this topic. 
let me rephrase my question:
as i am using a coin acceptor that generates pulses depending on the coin being inserted in the coin acceptor,
What can i do to program the arduino uno to identify as well the type of coin inserted in the coin slot using the pulses generated?
What codes should i use?
again, i'm sorry for being rude.