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Computers: Hardware

Computers: Hardware. Patrice Koehl Computer Science UC Davis. Acknowledgments. Thanks to the following web site for the images used in this presentation:. Wikipedia http://microsoft.toddverbeek.com http://www.webopedia.com http://www.engin.umd.umich.edu/ http://www.dell.com

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Computers: Hardware

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  1. Computers: Hardware Patrice Koehl Computer Science UC Davis

  2. Acknowledgments Thanks to the following web site for the images used in this presentation: • Wikipedia • http://microsoft.toddverbeek.com • http://www.webopedia.com • http://www.engin.umd.umich.edu/ • http://www.dell.com • http://www.intel.com • http://www.apple.com • http://www.ibm.com • http://homepages.feis.herts.ac.uk/~msc_ice/unit2/ • http://www.howstuffworks.com

  3. Computer Layers Hardware BIOS Operating System Software Programming languages

  4. Computer Layers Hardware BIOS Operating System Software Programming languages

  5. Looking inside a computer… Computers come in different shapes and sizes, from small laptops (notebooks), desktops to mainframe computers. They all share however the same internal architecture!

  6. Computer: basic scheme Input devices Output devices CPU Storage

  7. The motherboard: backbone of the computer Power supply connector Slot for memory: RAM Hard drive connectors Slot for CPU Input/Output: Keyboard, Mouse,… Extension cards: Video, sound, internet…

  8. The Central Process Unit (CPU): The “brain” of the computer CPUs are getting smaller, and can include more than one “core” (or processors). CPUs get hot, as their internal components dissipate heat:it is important to add a heat sink and fans to kep them cool.

  9. Memory: Working Space

  10. Storage Hard drive Floppy disk CD or DVD USB key

  11. Communicating with a computer Screen Mouse Keyboard

  12. Some Input/Output Interfaces Video cards Sound card Ethernet card

  13. Hardware communication: buses Cache CPU (33 to 1333 MHz) Backside bus (speed of processor) (66 MHz) (33 to 1333 MHz) ISA devices ISA bus (33 or 66 MHz) (8.3 MHz) (up to 300 MHz)

  14. Hardware communication: buses The memory bus: a 16 bit bus CPU RAM • Communication between the CPU and the RAM is defined by: • the CPU speed • The RAM speed • The number of bits transferred per cycle Other buses: USB, Firewire, PCI Express,…

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