Serial Port Complete : Programming and Circuits for RS-232 and RS-485 Links and Networks

I read all the reviews I could find before buying this book, and they lead me to believe that I could find the help I needed to write a small program to control a bank of DVD players via RS232. Needless to say, this book gave me a lot of VERY useful serial bus information, especially on the "MSComm" Visual Basic serial port control. Chapter 4 gave me all the tips and hints I needed to "hack" together a first-draft application in under a day's work of coding! This is the first book to have extensive detail on RS-485, a widely used industry-standard interface for networks. This reference features original content based on the author's firsthand research and experience, not just rewritten specifications and marketing materials PC COM ports, USB virtual COM ports, and ports in embedded systems are all addressed in this updated guide to programming, interfacing, and using serial ports