Hi List, May be this topic has no direct relationship with PIC MPU but I know that there is alot of experts and hard workers in this list .... 1- recently I am interesting in the GPS based sys., I found a link explaining it`s princibles and where it can be used ... I am wondering if anybody know how it can be controlled what is the Hardware and software requirements to develop system based on GPS and how it can be integrated for example with specific product .... any links or design companies dealing with GPS .... I eagerly want to know how those cars get to their destinations ..... 2- Also what is the recommended books for Digital esign( flip-flops,counters,shift-regs,boolean alg.,MUX,...etc) with practical examples . 3- Applied Math. books. 4- Cypher books ( from simple technique to the most complex one) which contain Algo. that can be done by software/Hardware or mix(S&H in the same time). thanx in advance, Regards, Salah. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body