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Appendix 2 - Glossary of Terms
K
keyboard connector:
The five-pin connector located on the front control
panel.
kilobyte (KB):
1,024 bytes.
L
LED:
Light Emitting Diode. Long-lasting light emitters usually used as indi-
cators.
load board:
A board having specific resistance to current flow.
P
parallel port:
I/O connector used to hook up a printer or other parallel inter-
face device. The parallel port is usually a 25-pin female DB25 connector.
PCI
(
Peripheral Component Interconnect):
An optional slot standard for
plug-in boards
port:
Ports are used to connect peripheral devices such as external drives and
printers to your computer.
power good:
Signal used to prevent the computer from starting until the
power has stabilized. The power good line switches from 0 to +5 volts
within one tenth to one half second after the power supply reaches normal
voltage levels. Whenever low input voltage causes the output voltage to
fall below operating levels, the power good
signal goes back to zero.
power ON/diagnostic LED:
The LED located on the front control panel that
indicates that power is present in the computer.
power supply:
Electrical system that converts AC current from the wall outlet
into the DC currents required by the computer circuitry. In a personal
computer, +5, -5, +12 and -12 voltages are generated.
power switch:
Located on the front control panel, the power switch turns
power ON to the computer.
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G8 CPCI Enclosure User’s Guide
Содержание G8
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