Get a classic, well-rounded introduction to computer concepts with a modern twist! Understanding Computers: Today and Tomorrow will ensure that learners have the comprehensive, current knowledge of computer concepts and issues needed to succeed in our techoecentric society. The completely updated 12th edition offers exciting new coverage of emerging technologies, including Software as a Service (Saas), Web 2.0, dual-mode mobile phones, ZigBee, Net neutrality, and social networking sites.