Introduction to Computer Essentials. Information Systems 1. People 2. Procedures 3. Software 4. Hardware 5. Data.

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Presentation transcript:

Introduction to Computer Essentials

Information Systems 1. People 2. Procedures 3. Software 4. Hardware 5. Data

People People - most important part of an information system  Entertainment  Medicine  Education  Business Computers and information touch our lives hundreds of times each day

Software Software - another name for programs  Tells computer how to process data Two kinds of software  System software – what the computer uses  Application software – what you use

Software System Software  Helps manage computer’s resources  Operating system Application Software  General purpose \ special purpose applications  Browser, Office products

Hardware 1. Supercomputer 2. Mainframe computers 3. Minicomputers 4. Microcomputers

Microcomputer Hardware System unit (system cabinet or chassis)  Microprocessor  Memory Random access memory (RAM) Input/output devices

Secondary storage devices Hard disks – internal, external Floppy disks Zip disk Jaz disk Optical discs USB key / pen

Computer “Care” On and Off -Do and Don’t  Wait 60 seconds between turning on and off  Do not turn off in the middle of a program  Turn off before connecting new hardware (except usb) Do not remove disks if drive light is on

Data Document files Worksheet files Database files Presentation files Types of files

Connectivity, the Wireless Revolution, and the Internet Connectivity - capability to share information with other computers Wireless communication devices Computer network  Internet  World Wide Web

Network Groups of computers connected Physically connected….or wireless Computer is workstation or client – server  Server has the software, client computer accesses that software so that the client can “work”

Other Topics on Course Site to read Spyware - Malware Ergonomics Using Help in Windows