Quote Originally Posted by Ioannis
Well, the search function you are using I suppose is linear. So if the entry to search is the last one then you have to read all the previous ones. If you are lucky only the first byte should be tested.

I think the best method is to use Binary Search. How this works? Have a google on this and you will see. It has nothing to do with hex/bin/dec!

I don't have right now a running code about this but may be get it to finish in a couple of months.

Ioannis
Thank you for your answer, I have only the problem to read the 24LC65 fast enough and find out if the iButton is in the EEPROM fastest possible for Authorization of the iButton in the Reader. Going to try
Binary Search.

Bosse