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PC/104 – DURACHASSIS 5X5 机箱 35
G
GPS
Global Positioning System is a worldwide satellite navigational system formed by satellites orbiting the earth
and their corresponding receivers on the earth.
GSM
Global System for Mobile communications
，
is one of the leading digital cellular systems，and uses
narrowband Time Division Multiple Access which allows eight simultaneous calls on the same radio
frequency.
H
HDC
Hard Disk Controller is a special-purpose chip and circuitry that directs and controls reading from and writing
to a computer’s disk drive.
I
IDE
Integrated Device Electronics is a disk drive interface where the controller electronics reside on the drive
itself. This allows elimination of the need for a separate adapter card.
IEEE
IEEE stands for Institute of Electrical and Electronics Engineers，pronounced “I-triple-E.” Founded in 1963，
IEEE is an organization composed of engineers， scientists ， and students. IEEE is best known for
developing standards for the computer and electronics industry.
I/O
I/O (Input/output). Two of the three activities that characterize a computer (input，processing，and output).
Refers to the complementary tasks of gathering data for the microprocessor to work with and making the
results available to the user through a device such as the display，disk drive，or printer.
IRQ
IRQ (Interrupt ReQuest). A method by which a device can request to be serviced by the device’s software
driver. The system board uses a PIC to monitor the priority of the requests from all devices. When a request
occurs，a microprocessor suspends the current operation and gives control to the device driver associated
with the interrupt.
ISA
ISA (Industry Standard Architecture) is an 8-bit / 16-bit bus that provides a buffered interface from devices on
expansion cards to the PC internal bus.
L
LAN
LAN (Local Area Network). A group of computers and other devices spanned over a relatively limited area
(i.e. a single building).
LBA
LBA (Logical Block Address). A unit of data supplied or requested by a host computer.