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alternating current (AC): Current that cycles back and forth rather than traveling in only one direction. In the United States, the AC voltage from a standard wall outlet is normally between 110 and 115 V. In Europe, the standard AC voltage from a wall outlet is 220 V.(Ac)
antistatic wrist strap A strap you wear around your wrist. The strap has a cord attached with an alligator clip on the end. Attach the clip to the computer case you are working on to prevent static electricity. It is also called an antistatic wrist strap or ESD bracelet.aws
ampere or amp (A) A unit of measurement for electrical current. One volt across a resistance of one ohm will produce a flow of one amp.ampere or amp
ATX: The most common form factor for PC systems presently in use, originally introduced by Intel in 1995. ATX motherboards and cases make better use of space and resources than did the AT form factor. ATX:
ATX12V power supply: A power supply that provides a 12 V 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. ATX12V power supply:
brownouts Temporary reductions in voltage, which can sometimes cause data loss. Also called sags.
BTX (Balanced Technology Extended): The latest form factor expected to replace ATX. It has higher quality fans, is designed BTX (Balanced Technology Extended):for better air flow, and has improved structural support for the motherboard.
capacitor: An electronic device that can maintain an electrical charge for a period of time and is used to smooth out the flow of electrical current. Capacitors are often found in computer power supplies. capacitor
clamping voltage: The maximum voltage allowed through a surge suppressor, such as 175 or 330 volts.clamping voltage:
compact case: A type of case used in low-end desktop systems. Compact cases, also called low-profile or slim-line cases, follow either the NLX, LPX, or Mini LPX form factor. They are likely to have fewer drive bays, but they generally still provide for some expansion.c
Compact case A surge protector designed to work with the telephone line to a modem.compact case
daughter card: A subordinate extension of a motherboard. daughter card
diagnostic card: A card that is useful when troubleshooting errors with hardware. diagnostic card
diode An electronic device that allows electricity to flow in only one direction. Used in a rectifier circuit. diode
DIP (dual inline package) switch: On/off switches used on older motherboards to configure the board. DIP (dual inline package) switch
direct current (DC): Current that travels in only one direction (the type of electricity provided by batteries). Computer power supplies transform AC to low DC. direct current (DC)
electromagnetic interference (EMI) 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.(EMI)
electrostatic discharge (ESD) An electrical charge at rest. Also known as static electricity. electrostatic discharge (ESD)
Created by: joseph0506