Hi. anybody can suggest books for intermediate level hobbyists? At the moment I have been working with the 18F series, starting looking at the 24F chips. I am mostly interested in USB, TPC/IP and RTOS projects. There is lot of choice for beginners but much less when you want some deeper information. thanks Cristiano -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist