IT Vocab PC 8 Flashcards
The flow of negatively charged particles through matter
electricity
Unit of measure for electrical current
Amps
The voltage differential between any two objects, one of which is frequently ground or earth, resulting in a degree of attraction for the electrons to move from one of the objects to the other
electrical potential
Unit of energy describing how much energy a surge suppressor can handle before it fails
joule
Connects the cable supplying AC power from the wall outlet into the power supply
IEC-320
A connector used to create more connections to power all the devices in a PC
splitter
Device that supplies continuous clean power to a computer system the whole time the computer is on. Protects against power outages and sags
uninterruptible power supply (UPS)
15-pin, L-shaped connector used that supports hot-swappable
SATA power connector
Electrical interference from one device to another, resulting in poor performance of the device being interfered with
Electromagnetic interference
Component in a CRT monitor that has very high voltages of electricity flowing through it
high voltage anode
Device used to measure voltage, amperage, and resistance
multimeter
Provides the electrical power for a PC. Converts standard AC power into various voltages of DC electricity
power supply unit
Type of electricity in which the flow of electrons is a complete circle in one direction
direct current
the wire which helps excess electricity to return safely to the ground
ground
type of electricity in which the flow of electrons alternates direction, back and forth in a current
alternating current
large sags in electricity
brownouts
measurement of the amps and volts needed for a particular device to function
watts (W)
Uncontrolled rush of electrons from one object to another. A real menace to PCs, as it can cause permanent damage to semiconductors
electrostatic discharge
Amount of electrons moving past a certain point on a wire; measured in units called amperes
current
memory that must have constant electricity to retain data
volatile
type of power supply that works with either 110- or 220- volts outlets
dual-voltage
Difficulty in making electricity flow through a material, measured in ohms
resistance
the test using a multimeter which checks whether electrons can flow from one end of the wire to the other
continuity
Metal plates that cover up unused expansion slots on the back of a PC
Slot covers
Inexpensive device that protects your computer from voltage spikes
surge suppressors
Measurement of the pressure of the electrons passing through a wire
voltage
