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Appendix A Information Systems Hardware

Appendix A Information Systems Hardware. Information Systems Today Leonard Jessup and Joseph Valacich. Appendix A Objectives. Understand key elements of information systems hardware Understand types of computers used in organizations today. Key Elements of IS Hardware. Input Devices

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Appendix A Information Systems Hardware

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  1. Appendix AInformation Systems Hardware Information Systems Today Leonard Jessup and Joseph Valacich

  2. Appendix A Objectives • Understand key elements of information systems hardware • Understand types of computers used in organizations today

  3. Key Elements of IS Hardware • Input Devices • Processing Devices • Output Devices

  4. Input Devices • Entering text and numbers • Pointing and selecting information • Entering batch data • Entering audio and video

  5. Input Devices • Entering text and numbers • Keyboard • Regular • Cordless (radio frequency waves) • Ergonomics • Repetitive stress injuries

  6. Input Devices • Pointing and Selecting Information • Examples • Touch screen • Light pen • Mouse • Touchpad

  7. Input Devices • Entering Batch Data • Batch input • Scanners • Text recognition software

  8. Input Devices • Types of Scanning • Optical Mark Recognition (OMR) • Optical Character Recognition (OCR) • Bar Code Readers • Magnetic Ink Character Recognition (MICR)

  9. Input Devices • Smart Cards • A credit card with: • magnetic strip • microprocessor chip • memory circuits

  10. Input Devices • Entering Audio and Video • Video recording • Voice input • Speech recognition • MIDI • Musical Instrument Digital Interface • Video input • Digital cameras • Streaming video • Streaming media

  11. Processing: Transforming Inputs into Outputs • Binary code • Machine language • Bit – binary digit • Byte – 8 bits or one typed character

  12. Processing: Transforming Inputs into Outputs • Elements of computer storage

  13. Processing: Transforming Inputs into Outputs • Binary codes • ASCII • American Standard Code for Information Interchange • EBCDIC • Extended Binary-Coded Decimal Interchange Code • Unicode

  14. Processing: Transforming Inputs into Outputs • System Unit • Motherboard • Central Processing Unit (CPU) • RAM and ROM • Drives: hard, diskette, CD-ROM or DVD-ROM • Ports

  15. Processing: Transforming Inputs into Outputs • Motherboard • Contains components that do the processing • Power supply

  16. Processing: Transforming Inputs into Outputs • Central Processing Unit (CPU) • Arithmetic Logic Unit (ALU) • Performs mathematics • Control Unit • Fetch instructions • Decode instructions • Retrieve data • Store results • Moore’s Law

  17. Processing: Transforming Inputs into Outputs • Primary Storage (volatile) • Random-Access Memory (RAM) • Read-Only Memory (ROM) • Secondary Storage (nonvolatile)

  18. Processing: Transforming Inputs into Outputs • Secondary Storage (nonvolatile) • Hard drives • Diskette drives • Zip drives • Optical disks • CD-ROM • DVD-ROM • Tapes

  19. Output Devices • Output • Video Output (CRT and LCD) • Printers and Plotters • Audio Output

  20. Types of Computers • Supercomputers • Mainframes • Midrange computers • Workstations • Microcomputers (personal computers) • Network computers • Portable computers • Notebook computers • Handheld computers

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