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What is a Computer?

What is a Computer?. What is a Computer?. Electronic device Operates under instructions stored in its memory Accepts data Processes data Produces results Stores results for future use. Data versus Information. Data (Input)

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What is a Computer?

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  1. What is a Computer?

  2. What is a Computer? • Electronic device • Operates under instructions stored in its memory • Accepts data • Processes data • Produces results • Stores results for future use

  3. Data versus Information • Data (Input) • Unprocessed collection of text, numbers, symbols, images, audio, video • Information (Output) • Conveys meaning that is useful

  4. Components of a Computer • Input devices • Output devices • System unit • Storage devices • Communication devices

  5. Advantages • Speed • Reliability • Consistency • Storage • Communications

  6. Disadvantages • Health risks • Violation of privacy • Public safety • Impact on labor force • Impact on environment

  7. Network • What is …. • Collection of computers and devices connected together • Advantages of networks • Allows sharing of resources such as hardware, software, data, and info

  8. Internet • What is….. • Collection of networks • What do you use the Internet for?

  9. What is Software? • Program • Series of related instructions • Tells computer what tasks to perform and how to perform them • Graphical User Interface (gooey) • Used to interface with software using text, graphics, and visual images (icons)

  10. Two Types of Software • System • Control or maintain operations of computer • Serves as interface between user and application software • Two types– operating & utility • Operating – coordinates activities among hardware devices • Utility – maintenance type tasks i.e. managing printers

  11. Two Types of Software • Application • Programs designed to make users more productive and assist with personal tasks

  12. Categories of Computers • Personal computers • Mobile computers and mobile devices • Game consoles • Servers • Mainframes • Supercomputers • Embedded computers

  13. Categories of Users • Home • Small Office/Home Office • Mobile • Power • Enterprise

  14. Computer Applications in Society • Education • Finance • Government • Health care • Science • Publishing • Travel • Manufacturing

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