A+ Chapter 4

Front 1

active backplane

Back 1

a type of backplane system in which there is some circuitry, including bus connectors, buffers, and driver circuits, on the backplane

Front 2

AC( Alternating current)

Back 2

current that cycles back and forth

Front 3

US Standard AC wall voltage

Back 3

between 110-115V

Front 4

Europe standard AC wall voltage

Back 4

220V

Front 5

Amp

Back 5

an ampere measures electrical current. One volt across a resistance of one Ohm will produce a flow of one Amp

Front 6

AT;also called full AT

Back 6

a form factor; generally no longer produced; in which the motherboard requires a full size case

Front 7

ATX

Back 7

THE most common form factor for PC's still in use.

Front 8

ATX 12V power supply

Back 8

provides a 12V power cord with a 4-pin connector to be used by the auxiliary 4-pin power connector on motherboards used to provide extra power for processors

Front 9

Baby AT

Back 9

a improved and more flexible version of the AT form factor. The industry standard for approx. 1993-1997 and can fit into some ATX cases

Front 10

backplane system

Back 10

a form factor in which there is no true motherboard. INstead motherboard components are included on an adaptor card plugged into a slot on a board called a backplane

Front 11

brownouts

Back 11

temporary reductions in voltage, which sometimes causes data loss

Front 12

BTX ( Balanced Technology Extended )

Back 12

the latest form factor expected to replace ATX. Has higher quality fans and improved structural support for the motherboard

Front 13

capacitor

Back 13

can maintain an electrical charge for a period of time and is used to smooth out the flow of electrical current

Front 14

clamping voltage

Back 14

THE max voltage allowed through a surge suppressor

Front 15

Compact Case; also called a low profile or slimline case

Back 15

follow either the NLX, LPX, or Mini LPX form factor

Front 16

data line protector

Back 16

a surge protector designed to work with at telephone line to a modem

Front 17

diode

Back 17

a device that allows electricity to flow in only one direction. Used in a rectifier circuit

Front 18

(DC) direct current

Back 18

Current that only travels in one direction. PC's power supplies transform AC to low DC

Front 19

Display Power Management Signaling (DPMS)

Back 19

Energy star standard specifications that allow for the video card and monitor to go into sleep mode simultaneously

Front 20

(EMI) Electromagnetic Interference

Back 20

a magnetic field produced as a side effect from the flow of electricity. EMI can cause corrupted data in data lines that are not properly shielded

Front 21

Field Replaceable Unit (FRU)

Back 21

parts that can be replaced with out going to the shop

Front 22

Flex ATX

Back 22

a version of the ATX form factor that allows for max flexibility in the size and shape of cases and motherboards. is ideal for custom systems

Front 23

Form Factor

Back 23

a set of specifications on the size, shape, and configuration of a computer hardware component such as a case, power supply, or motherboard

Front 24

Intelligent UPS

Back 24

connected to the computer by the way of a USB or serial cable so that software on the computer can monitor and control the UPS

Front 25

line conditioner

Back 25

a device that regulates, or conditions, power, providing continuous voltage during brownouts and spikes

Front 26

line interactive

Back 26

a variation of a standby UPS that shortens switching time by always keeping the inverter that converts AC to DC working, so that there is no charge-up time for the inverter

Front 27

LPX

Back 27

a form factor in which expansion cards are mounted on a riser card that plugs into a motherboard. The expansion cards in LPX systems are mounted parallel to the motherboard, rather than perpendicular to it as in AT and ATX systems

Front 28

Micro ATX

Back 28

addresses some new technologies that were developed agter the orginal into of ATX

Front 29

Mini-ATX

Back 29

a smaller ATX board that can be used with regular ATX cases and power supplies

Front 30

MIni LPX

Back 30

a smaller version of the LPX motherboard

Front 31

NLX

Back 31

a low end form factor that is similar to LPX but provides greater support for current and emerging processor technologies,

Front 32

ohm

Back 32

the standard unit of measurement for electrical resistance.

Front 33

P1 connector

Back 33

Power connection on an ATX or BTX motherboard

Front 34

P8 Connector

Back 34

One or two power connectors on a AT mohterboard

Front 35

P9 connector

Back 35

one of two power connectors on a AT mother board

Front 36

passive backplane

Back 36

this backplane contains no circuitry, it is all contained on a motherboard connected into a backplane

Front 37

Power Conditioner

Back 37

a line conditioner that regulates power providing continuous voltage during a brownout

Front 38

rectifier

Back 38

an electrical device that converts AC to DC

Front 39

resistor

Back 39

resists or opposes the flow of electricity.

Front 40

riser card

Back 40

a card that plugs into a motherboard and allows for an expansion cards to be mounted parallel to the motherboard

Front 41

soft switch or soft power

Back 41

a feature on the ATX or BTX system that allows and OS to power down the system and allows for activity such as keystroke and network activity to power up the system.

Front 42

transformer

Back 42

changes the ratio of current to voltage.

Front 43

transistor

Back 43

regulates electricity and act as a logical gate or switch for an electrical signal