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An Overview of Computer Concepts and Applications

This presentation provides a comprehensive review of computer basics, emphasizing the fundamental operations of computers: accepting input, processing data, producing output, and storing results. It explores the information processing cycle and discusses why computers are powerful devices, particularly due to their speed, reliability, and storage capabilities. The categories of computers—personal, mini, mainframe, and supercomputers—are detailed, highlighting their distinctive features, usage, and the environments designed to support them.

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An Overview of Computer Concepts and Applications

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  1. Chap. 1 & 2 - Overview, Apps Jan Smith Computer Concepts and Applications Spacebar = next slide Backspace = previous slide Esc = quit

  2. Covering: • Review of chapter 1 - Overview

  3. Chapter 1 - Overview A computer is an electronic device that: a. operates under the control of memory unit b. accepts data c. processes data d. produces output e. stores the results for use later

  4. Chapter 1 - Overview b. accepts data c. processes data d. produces output e. stores the results for use later Information Processing Cycle Input Processing Output Storage

  5. Why is a computer powerful? • Speed billions of actions per second • Reliability failures usually human error • Storage keepshuge amounts of data

  6. Categories of Computers • Personal or micro • Mini • Main Frame • Super

  7. Categories of Computers Personal = micro Portable Types: Hand-held Palmtop Notebook Subnotebook Laptop Pen

  8. Categories of Computers Personal = micro Portable Types: Hand-held Palmtop Notebook Subnotebook Laptop Pen Desktop

  9. Categories of Computers Personal = micro Portable Types: Hand-held Palmtop Notebook Subnotebook Laptop Pen Desktop Tower

  10. Categories of Computers Personal = micro Portable Types: Hand-held Palmtop Notebook Subnotebook Laptop Pen Desktop Tower Workstations

  11. Categories of Computers Servers (how it’s used more than what it is) Designed to support a computer network More powerful Larger memory Larger storage capacity High speed communications

  12. Categories of Computers Minicomputers Originally for specific tasks, like engineering calculations Main frame Large systems for hundreds of users Requires special environment

  13. Categories of Computers Supercomputers Most powerful category Used for weather forecasting, engineering design and testing, serious decryption Cost several million dollars

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