Eurotech Appliances CPU-1461 User Manual

Page 63

PC/104-Plus – CPU-1461 Module

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 that 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.