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39 Cards in this Set

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Voltage

Potential difference measured in volts

Current

Flow of electrons. Measured in amps

Resistance

Conductivity measured in ohms (R)

Power

Watts=(volts * amperage)

Alternating current

Wave of power at varying voltage

Direct current

Consistent short range power at stable voltage

Conductor

Material that is more likely to carry charge

Insulator

Material less likely to carry charge

Resistor

Device designed to hold back flow of current

Capacitor

Power well or reserve

Semiconductor

Device that allows electricity to flow one way but not the other

Diode or transistor

Fuse

Device that breaks a connection when too much wattage passes through

What voltages do PCs use?

3.3V, 5V, & 12V

Surge

Too much power for too long. Can break stuff

Spike

Very brief power surge. Can be mitigated by fuse

Line conditioning

Keeps exactly stable voltage for internal power grids to prevent sparks. Think hospitals

UPS

Uninterruptible Power Supply

KVM

Keyboard video & mouse

MIDI

Musical Instrument Device Interface

SATA

Serial Advanced Technology Adapter

DRAM

Dynamic random access memory

SDRAM

Synchronous Dynamic Random Access Memory

DIMM

Dual Inline Memory Module

Double Pumped RAM

2 data transfers per clock tick. Also known as PC-Xxxx (ie ddr2 is pc2-xxxx)

What makes RD RAM different

Conductive gel instead of individual circuits, increases surface area and therefore, storage

DDR

Double data rate. Double pumped memory

Ddr2 and 3 have _____ number of pins

240

Ddr RAM has _____ pins

184

SODIMM

Small Outline Dual Inline Memory Module

RAM Density

Number of chips and capacity per chip

ECC

Error correcting code

DIN

Deutsch industry norm

MiniDIN is also known as

PS/2

VGA

Video graphics adapter

What port is this?

FireWire

Rj45

Registered jack 45. Ethernet port

Rj11

Registered jack 11. Phone line

Another name for FireWire is

IEEE1394

Ribbon cables could also be called

PATA or parallel cable