1 / 26

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

melva
Télécharger la présentation

Appendix A Information Systems Hardware

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related