Hi, > I would like to know where on the net I could find info on RS232. I > wish to interface a computer to a PIC16C74 via a serial link. Thanks > in advance. Anybody wishing to know a bit more about RS232 and PC RS232 programming should take a look at Christian Blum's FAQ. It's available from numerous sites but probably the most up-to-date copy can be found here: ftp://ftp.phil.uni-sb.de/pub/chris/The_Serial_Port There are a few other files in /pub/chris that might be worth a look too. David -- david.tait@man.ac.uk