One of the reasons for offering a second edition of this book is to accommodate the many requests I received from university professors to make the first edition more academia-friendly. While this was not the only factor—others are cited in the Introduction—in deciding to put forth the effort of a second version, it was a primary one.

In light of this, I would like to thank several of the professors whose suggestions and encouragement helped to bring this second edition into existence.

First, there is Professor Les Labuschagne, who heads up the School of Computing at the University of South Africa in Pretoria, South Africa. This is the largest distance-education university in all of Africa. Prof. Labuschagne was among ...

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