1. Chap. 1 & 2 - Overview, Apps Jan Smith 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. b.accepts data c.processes data d.produces output e.stores the results for use later Chapter 1 - Overview 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 keeps huge amounts of data

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

7. Categories of Computers Workstations Desktop Tower Personal = micro Portable Types: Hand-heldPalmtop NotebookSub-notebook LaptopPen

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

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

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