, , (System board Motherboard) , . .
().
: (ROM Flash BIOS), (CMOS), (DRAM), (SRAM).
-: , , DMA, , CMOS RTC, .
.
.
PowerGood Reset.
.
VRM (Voltage Regulation Module). , +5 , .
: ; ; . . ( CMOS Setup) , , , ( ). .
, , - LPT-, 2÷6 USB, . , SCSI, Fire Wire (1394). - , , . , (, ). , (, SCSI, ), . . , . - , , , . , . , , .
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(Chipset) , , . , - , . (, , ) , 30 %.
, North Bridge ( ) South Bridge ( ). AGP PCI-E, , PCI . IDE (ATA), USB, ISA, PCI, , , FDD. PCI.