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EXPANSION CARDS BUS ARCHITECTURE AND CONNECTORS

EXPANSION CARDS BUS ARCHITECTURE AND CONNECTORS. An opening, or socket, where a circuit board can be inserted into the motherboard Used to add new devices or capabilities to the computer.

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EXPANSION CARDS BUS ARCHITECTURE AND CONNECTORS

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  1. EXPANSION CARDS BUS ARCHITECTUREAND CONNECTORS Introduction Computer Hardware Jess Role @UEAB 2006

  2. An opening, or socket, where a circuit board can be inserted into the motherboard • Used to add new devices or capabilities to the computer • Other terms for a circuit board include card, expansion card, expansion board, board, adapter card, adapter, interface card, add-in, and add-on Expansion Slots and Expansion Cards What is an expansion slot? Introduction Computer Hardware Jess Role @UEAB 2006

  3. Video card also called video adapter or graphics card Sound card Network interface card (NIC) also called a network card Modem card also called an internal modem Expansion Slots and Expansion Cards What are four common types of expansion cards? Introduction Computer Hardware Jess Role @UEAB 2006

  4. The computer automatically can configure cards and other devices as you install them Expansion Slots and Expansion Cards What is Plug and Play? Introduction Computer Hardware Jess Role @UEAB 2006

  5. Expansion Slots and Expansion Cards What is a PC card? • Used on notebook and other mobile computers • Credit card-sized device used to add capabilities to mobile computer • Standards developed by Personal Computer Memory Card International Association (PCMCIA) Introduction Computer Hardware Jess Role @UEAB 2006

  6. mouse keyboard USB USB serial port printer (parallel port) speaker monitor microphone game port network telephone line out telephone line in FM reception svideo out cable TV Ports • Used to connect external devices to the system unit • Port is the interface, or point of attachment, to the system unit • Most located on the back of the system unit What is a port? Introduction Computer Hardware Jess Role @UEAB 2006

  7. Ports What are the different types of connectors? Introduction Computer Hardware Jess Role @UEAB 2006

  8. byte representation for number 1 (00110001) serial transmission of data byte representation for number 3 (00110011) byte representation for number 5 (00110101) DB-9 female connector DB-9 male connector Ports What is a serial port? • Transmits one bit of data at a time • Used to connect devices that do not require fast transmission rates • mouse • keyboard • modem • Two common types • 25-pin • 9-pin Introduction Computer Hardware Jess Role @UEAB 2006

  9. byte representation for number 1 byte representation for number 3 byte representation fornumber 5 DB-25 male connector DB-25 female connector Ports • Connects devices that can transfer more than one bit at a time • Usually used for printers • Two newer types • EPP (Enhanced Parallel Port) • ECP (Extended Capabilities Port) • IEEE 1284 is a standard that specifies how older and newer peripheral devices transfer data to and from a computer What is a parallel port? Introduction Computer Hardware Jess Role @UEAB 2006

  10. Ports What is a universal serial bus port (USB)? • Can connect up to 127 different peripheral devices with a single connector type • Supports newer peripherals • Supports hot plugging and Plug and Play Introduction Computer Hardware Jess Role @UEAB 2006

  11. Daisy Chain • Devices connected together outside the system unit in a chain • USB hub • Plugs into the USB port on the computer • Contains multiple USB ports USB hub Computer with USB port Computer with USB port device 1 device 1 device 3 device 3 device 2 device 2 device 4 device 4 Ports How are multiple USB devices connected? Introduction Computer Hardware Jess Role @UEAB 2006

  12. Generic Model of I/O Module Introduction Computer Hardware Jess Role @UEAB 2006

  13. Buses • Electrical channels that allow various devices inside the computer to communicate with each other • Bus width determines the number of bits transmitted at one time • Word size determines the number of bits the processor can interpret and execute at a given time What is a bus? Introduction Computer Hardware Jess Role @UEAB 2006

  14. Expansion bus Allows the processor to communicate with peripheral devices System bus Part of the motherboard that connects the processor to main memory Buses What are the two basic types of buses? Introduction Computer Hardware Jess Role @UEAB 2006

  15. Buses • Bus type determines type of expansion card you can add • ISA (Industry Standard Architecture) • Local bus • VESA local bus • PCI (Peripheral Component Interconnect) • Accelerated Graphics Port (AGP) • Universal serial bus (USB) • PC Card bus What are the types of expansion buses? processor fastest next fastest next fastest slowest memory AGP bus slot PCI bus expansion slots Introduction Computer Hardware Jess Role @UEAB 2006 ISA bus expansion slots

  16. DVD-ROM drive CD-RW drive Zip drive empty drive bay floppy disk drive Bays • An open area inside the system unit used to install additional equipment • Drive bays • Used for disk drives • External drive bay • Also called exposed drive bay • Accessible from outside the system unit • Internal drive bay • Also called hidden drive bay • Concealed entirely within the system unit What is a bay? Introduction Computer Hardware Jess Role @UEAB 2006

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