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Welcome to the Web site for the computer science textbooks of William Stallings. He is an 12-time winner of the Texty Award for the Best Computer Science and Engineering Textbook of the year, awarded by the Text and Academic Authors Association (TAA). All of the textbooks come with extensive support for students and instructors, including for instructors: projects manual for a wide variety of projects, PPT slides, solutions manual, and online mailing list; and for students: a student support page with useful links and documents, and supplemental online material including, for some books, supplemental online appendices and chapters. The books include:

orangeball Computer Security, Third Edition – just published
orangeball Operating Systems, Eighth Edition
orangeball Data and Computer Communications, Tenth Edition
orangeball Cryptography and Network Security, Sixth Edition
orangeball Network Security Essentials, Fifth Edition
orangeball Business Data Communications, Seventh Edition
orangeball Computer Organization and Architecture, Ninth Edition – new edition due out in January 2015 - details
orangeball Wireless Communications and Networks, Second Edition – new edition due out in April 2015 - details



I created and maintain the Computer Science Student Resource Site. This site provides documents and links on a variety of subjects of general interest to computer science students (and professionals).
A number of my
published papers are available for download.
All of my
networking articles, which appear at networking.answers.com, where I am the Networking Category Expert Writer, are available.
ERRATA Here are the latest errata sheets for my books. If you find any other errors, please contact me at Email.
Here are some software directories to download:
Shareware, Freeware programs online for various OSs, including Windows, Mac, Linux, etc.
Here is a collection of tutorials on all aspects of creating and maintaining a website, as well as many useful tools and downloads.
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