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650 - Ch 4 Part 4

Form Factors and Power Supplies

QuestionAnswer
notebook case A type of case used for portable notebook computers.
ohm The standard unit of measurement for electrical resistance. Resistors are rated in ohms.
P1 connector Power connection on an ATX or BTX motherboard.
P8 connector One of two power connectors on an AT motherboard.
P9 connector One of two power connectors on an AT motherboard.
power conditioner A line conditioner that regulates, or conditions, power, providing continuous voltage during brownouts.
resistor An electronic device that resists or opposes the flow of electricity. A resistor can be used to reduce the amount of electricity being supplied to an electronic component.
riser card A card that plugs into a motherboard and allows for expansion cards to be mounted parallel to the motherboard.
sleep mode A mode used in many “Green” systems that allows them to be configured through CMOS to suspend the monitor or even the drive, if the keyboard and/or CPU have been inactive for a set number of minutes. See also Green Standards.
soft switch A feature on an ATX or BTX system that allows an OS to power down the system and allows for activity such as a keystroke or network activity to power up the system.
spikes Temporary surges in voltage, which can damage electrical components. Also called swells.
surge protector A device or power strip designed to protect electronic equipment from power surges and spikes.
tower case The largest type of personal computer case. Tower cases stand vertically and can be as high as two feet tall. They have more drive bays and are a good choice for computer users who anticipate making significant upgrades.
transformer A device that changes the ratio of current to voltage. A computer power supply is basically a transformer and a rectifier.
transistor An electronic device that can regulate electricity and act as a logical gate or switch for an electrical signal.
uninterruptible power supply (UPS) A device designed to provide a backup power supply during a power failure. Basically, a UPS is a battery backup system with an ultra-fast sensing device.
volt A measure of potential difference in an electrical circuit. A computer ATX power supply usually provides five separate voltages
watt The unit used to measure power. A typical computer may use a power supply that provides 200 W.
Created by: gcarboni
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