Hard Drives
Floppy Drives
System Board Components
Used for Communication Among Devices
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Bus |
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System clock |
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Expansion slots |
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PCI:
Used for high-speed input/output devices |
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AGP:
Used for a video card |
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ISA:
Used by older and/or slower devices |
Bus Lines
System Clock
Expansion Slots
Expansion Slots
Interface (Expansion)
Cards
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Circuit boards inserted into a slot on
the system board to enhance capability of the computer |
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Common types |
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Video card |
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Network card |
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Internal modem |
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I/O controller card |
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Network card |
Video Card
The Electrical System
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Power supply |
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Supplies power to the system board and
other installed devices |
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Provides 3.3, 5, and 12 volts DC |
The Electrical System
The Electrical System
Instructions and Data
Stored on the System Board
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ROM chips |
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Contain permanent programming code |
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Sometimes called BIOS chips |
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CMOS configuration chips |
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Hold configuration or setup information |
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Jumpers or DIP switches |
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Hold configuration information |
ROM BIOS Chip on a Video
Expansion Card
ROM BIOS Chip on the
System Board