This code-intensive guide provides an in depth analysis of the inner workings of embedded software development for a variety of embedded operating systems including LINUX, NT and Palm OS. It also includes a variety of complete embedded applications with design specifications, flow diagrams and source code with line-by-line explanation. Also includes discussion of the challenges of embedded development such as timing, processor clocks and virtual environment development. The target platforms for embedded software are covered: microcontrollers (16 bit and 32 bit) as well as Digital Signal processors.