[EEEPROM] Frequency of coder , I dont how


I ask for a little of help to the community Arduino because I am still very novice of the code and for the EEPROM.

I possess a bascule bridge which is with a card EEPROM and an incremental coder.
I have to raise simultaneously the frequency of the impulses stemming from the coder and the frequency of writing of the EEPROM. I know that I have to make him(it) with a program but I do not see making how you would have an idea?