motherboard components used for communication among devices the data bus –system of pathways used...

Motherboard Components Used for Motherboard Components Used for Communication Among DevicesCommunication Among Devices

The data busThe data bus– System of pathways used for communication System of pathways used for communication

and the protocol and methods used for and the protocol and methods used for transmissiontransmission

The Bus and Bus LinesThe Bus and Bus Lines

BusBus

Data path side Data path side – Width of busWidth of bus

Can have multiply buses on a systemCan have multiply buses on a system– The bus that communicated with the CPU is The bus that communicated with the CPU is

the System, Host, Memory, front side, the System, Host, Memory, front side, external bus.external bus.

64 bits 64 bits

Data BusData BusMotherboards have more than one type of bus:-System bus (cpu, memory, chip set)-AGP bus (video)-PCI bus (expansion cards)

System ClockSystem Clock

Clock SpeedClock Speed

Of Of MotherboardMotherboard– Measured in megahertz (MHz)Measured in megahertz (MHz)– Ranges from 400MHz to over 1000MHzRanges from 400MHz to over 1000MHz

Of Of CPUCPU– Measured in gigahertz (GHz)Measured in gigahertz (GHz)– Ranges from 166MHz to over 4GHzRanges from 166MHz to over 4GHz

Expansion SlotsExpansion Slots

Types of Expansion SlotsTypes of Expansion Slots

There arealso, newerPCIExpressslots

Interface (Expansion) CardsInterface (Expansion) Cards

Interface (Expansion) CardsInterface (Expansion) Cards(continued)(continued)