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Introduction to Computer Science and Information Technology Class

Learn about problem-solving, information representation, system design, and IT functions. Understand the role of IT in businesses and society, with a focus on computer science principles.

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Introduction to Computer Science and Information Technology Class

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  1. CS 111 – Aug. 25 • What is this class about? • IT = How to make computers useful for people • Understanding what goes on inside (and outside) the machine • Commitment • For next day, please read Chapter 0

  2. CS versus IT • Computer science • How do we solve problems? • Classify problems; insight from solutions • How to represent information, languages • What is knowledge/information? • How to design better computing system • Information Technology • An applied science • Practical goals: make money, win wars, security, safety, protect environment, etc. • How can we use the computer to accomplish ….?

  3. Human history • Agricultural age (up to ~ 1800) • Industrial age (1800 – 1950) • Information age (1950 --) • We live in an information-based society. In other words, many tasks are defined in terms of doing something with information. • People and businesses depend on IT to get things done. • Not all countries follow this timeline.

  4. IT functions What does IT need to do? • Input or capture information • Store information for future use • Process: manipulate information and present it in a meaningful form • Output, i.e. allow retrieval of info • Communicate / transmit info to another location

  5. IT components • Computer: an electronic device that can process and store information • Communication network • Know-how: the skills needed to make best use of the computer system • Goals throughout IT: • Speed • Consistency and reliability • Precision

  6. Business components What does a business need to do? • Create something, i.e. manufacturing or service • Sell it • Ship it • Keep track of employees, customers, inventory • Communicate and coordinate all these activities. • IT speeds up the process, reduces error/waste. • Example: think of an airline.

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