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A light-emitting diode, a semiconductor device that illuminates when current flows, and is typically used to visualize
information, such as whether the power supply is turned on or the hard drive is operating.
PnP
Plug and play. A specification that allows the PC to automatically configure the external device without the user's manual
operating system. To achieve this feature, BIOS support for both PnP and a PnP expansion card is required.
DMI
Direct media interface, data transfer channel between processor CPU and IO controller (PCH, ICH).
TIPS:
Power on self test. During system startup, the BIOS performs a continuous check on the system, including detecting RAM,
keyboard, hard drive, etc. to see if it is properly connected and working properly.
PS/2
An interface specification for keyboard and mouse connections developed by IBM. PS/2 is a 6PIN DIN interface that can also
be used to connect to other devices, such as a modem.
USB
Universal Serial Bus. A hardware interface suitable for low-speed peripheral devices, generally used to connect a keyboard,
a mouse, and the like. A PC can connect up to 127 USB devices and provide a 12Mbit/s transmission bandwidth. USB
supports hot plug and multi-stream function, that is, USB devices can be inserted when the system works, and the system
can automatically recognize and insert the inserted devices. normal.
FSB
Front side bus, external bus.
PCIE
Full name Peripheral Component Interconnect Express A high speed serial differential full duplex bus transmission
specification.
PXE
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