Introduction to Computer Essentials

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Introduction to Computer Essentials
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Information Systems

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

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People

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

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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

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Software

• System Software
• Helps manage computers resources
• Operating system
• Application Software
• General purpose \ special purpose applications
• Browser, Office products

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Hardware

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

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Microcomputer Hardware

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

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

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Computer Care

• On and Off -Do and Dont
• 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

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Data

• Document files
• Worksheet files
• Database files
• Presentation files
• Types of files

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Connectivity, the Wireless Revolution, and the
Internet

• Connectivity - capability to share information
  with other computers
• Wireless communication devices
• Computer network
• Internet
• World Wide Web

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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

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Other Topics on Course Siteto read

• Spyware - Malware
• Ergonomics
• Using Help in Windows

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