Book Review: Semiconductor Devices (2nd Ed.): J. J. SPARKES

in 3 chapters, the author develops the theory and demonstrates with arithmetic examples the philosophy and practicalities of the subject. The 'scalar first and then vector systems' approach enables readers to confidently progress through an interesting and important field in modern systems design. A selection of useful and realistic examples is gathered in the ninth and final chapter, from estimating a constant to the commonly cited example of radar tracking. Again, the essential features of the solutions are developed arithmetically through the first few iterations, thereby exposing the reader to the practicalities without losing sight of the occasional complexities of the subject. The appendices and a list of 49 useful and accessible references complete what would be a valuable contribution to any undergraduate's bookshelf. It could well serve, too, as an example to the aspiring technical author, of how to write a friendly, readable and useful textbook! R. A. WILSON Control Systems Group. University of Hertfordshire