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Computer Hardware Concepts CIS 141 Lecture

Computer Hardware Concepts CIS 141 Lecture. Thad Crews Western Kentucky University. Input – Process – Output. Input – Process – Output. Input – Process – Output. Input – Process – Output. Processing. Processing. 2. Decode. 3. Execute. The Machine Cycle

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Computer Hardware Concepts CIS 141 Lecture

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  1. Computer Hardware ConceptsCIS 141 Lecture Thad Crews Western Kentucky University

  2. Input – Process – Output

  3. Input – Process – Output

  4. Input – Process – Output

  5. Input – Process – Output

  6. Processing

  7. Processing 2. Decode 3. Execute The Machine Cycle • 1. Fetch (instruction from RAM to CPU) • 2. Decode (CPU’s Control Unit) • 3. Execute (CPU’s Arithmetic Logic Unit, or ALU) • 4. Store (results back to RAM) Note: CPU clock speed is measured in GHz (gigahertz) 1. Fetch 4. Store

  8. A little more about Processing What is pipelining? • Processor begins fetching second instruction before completing machine cycle for first instruction • Results in faster processing

  9. A little more about Processing Processor 1 Processor 2 Processor 3 Processor 4 Memory Memory Memory Memory Parallel processing uses multiple processors simultaneously. A multi-core processor is a single chip with two or moreseparate processors Control Processor Results combined

  10. Memory • Electronic components that store instructions, data, and results What is memory?

  11. Memory Memory resides on small circuit boards called memory modules. These modules fit into memory slots on the motherboard.

  12. Buses • Electronic pathways that connect components on a circuit board What is a bus?

  13. (Not on the test; Just “FYI”) CPU RAM

  14. Input (keyboard, mouse, what else?)

  15. The Original Palm Pilot

  16. How Cool Is This? www.Gigapan.org Linkto http://www.gigapan.org/viewGigapan.php?id=17217

  17. Output (monitor, printer, what else?)

  18. Monitors • Output referred to as soft copy • Key Terms • Resolution/pixels • Size • Aspect ratio • Dot pitch • Refresh rate WUXGA (1920×1200) high-definition television (HDTV) content, which uses a 16:9 aspect ratio and a 1920x1080 resolution

  19. Monitors (cont) • Cathode-ray tube (CRT) monitors • Flat-panel monitors • Require less power to operate • Portable and thinner than CRTs • Other monitors • E-books readers • Data projectors • High-definitiontelevision (HDTV)

  20. Printers

  21. Resolution • Monitor resolution is pixel dimensions (e.g. 1920 x 1200) • Printer resolution is measured in dots per inch (dpi)

  22. Printers (cont) • Ink-jet printer • Laser printer • Personal laser printers • Shared laser printers • Other printers • Thermal printers (ATMs) • Dot-matrix printers (old) • Plotters • Photo printers • Portable printers

  23. IBM’s Flexible Display (in development)

  24. Connecting Display Devices standard monitorport S-video port Digital Video Interface (DVI) port

  25. Connecting Display Devices

  26. Disney’s Soaring ride

  27. Future Trends: Blended Input/Output (HCI)

  28. Microsoft Surface (www.microsoft.com/surface) Linkto http://www.youtube.com/watch?v=rP5y7yp06n0

  29. Ubiquitous Computing LINK http://www.youtube.com/watch?v=H_gLVlYOl0w&feature=related

  30. SAVING INFORMATIONStorage Hardware

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