Neco o PINech, utocich na ne a jejich pouziti je zde: http://www.fit.vutbr.cz/%7Ecvrcek/KIB/lecture13.pdf str. 29 a dale http://www.buslab.org/index.php/component/option,com_remository/Itemid,33/func,download/id,101/chk,ae0fd1e69ce4295d6d8bec519f73c450/ str. 111 a dale Martin Hanek