Chapters 9-12 Review Flashcards
A device that produces a strong magnetic field when electricity passes through it
Electromagnet
A simple device that converts electric to back and forth motion
Solenoid
A semiconductor that acts as a switch and amplifies a weak signal
Transistor
The study of electricity in a vacuum or semiconductors
Electronics
The process of replacing atoms of a semiconductor with atoms of another element
Doping
A device that changes the voltage of alternating current using electromagnetic induction
Transformer
Large computers designed to store and retrieve vast amounts of information
Mainframes
Data can be anywhere in a range
Analog
Positive terminal
Cathode
The most important device for converting electricity into motion
Electric motor
Lacks electrons
P-type semiconductor
Can not be recharged
Voltaic cell
The most common type of transistor
Field effect transistor
First mass-produced computer
UNIVAC I
A deceive that uses electromagnetic induction to produce electricity
Generator
The stored info and instruction for a computer to perform certain tasks
Software
The rate of charge flow
Current
Controls all other computer systems
Central processing unit
the largest computer network
Internet
A single chip that contains a complete CPU
Microprocessor
A collection of programs that display words and images on the screen
Operating system
Temporary storage
RAM
The SI unit of electric charge
Coulomb
The physical parts of a computer
Hardware
The smallest directly accessible unit of data
Byte
Instructions written in a programming language
Source code
A device that produces a single binary output based on one or more binary inputs
Logic gate
Narrow strip of metal in a case to limit circuit current
Fuse
An electrical switch operated by an electromagnet
Relay
Produces an electric current in a vacuum using a cathode
Thermionic emission
Pieces of information stored in computers
Data
Adds resistance to a circuit
Resistor
The line connecting all point where a compass needle points true north
Agonic line
The imaginary line that circles Earth halfway between two magnetic poles
Magnetic equator
If two charged balloons are held 5 cm apart what is the force between them
25
A small relatively inexpensive computer for use by one person at a time
Personal computer
Allows a computer to communicate with the outside world
Input/output device
Converts absorbed sunlight into electricity
Photovoltaic cell
Passes a conducting fluid through a magnetic field
Magnetohydrodynamic generator
Has an even strength throughout
Uniform field
uses a magnet stroking an object to magnetize it
Magnetism by contact
Produces light when a current is applied
Light emitting diode
Indicate the direction and strength of a magnetic fluid
Lines of flux
Processes information using electric circuits
Computer
Electrostatic method of reproducing images
Xerography
early device that stores electric charge
Leyden jar
A device that transforms energy into a useful form
Load
The SI unit of resistance
Ohm
A device of one or more cells connected as a single source
Battery
A device that converts pulses of electricity into sounds waves
Loudspeaker
Electromagnetics reproduce messages by audible clicks
Telegraph
A material that allows current to flow through with no resistance
Superconductor
Built the first electrostatic generator
Otto von Guericke
The transfer of charge by direct contact
Conduction
