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# 1.1 Key Terms

### Foundations in Electronics

TermDefinition
Analog A way of representing some physical quantity, such as temperature or velocity, by a proportional continuous voltage or current can have any value within a defined range
Conventional Current The direction of current flow associated with positive charge in motion. The current flow direction direction is from a positive to negative potential, which is in the opposite direction of eelctron flow
Current A movement of electrical charges around a closed path or circuit
Digital A way of representing a physical quantity by a series of binary numbers. A digital representation can have only specific discrete values
Digital Multi-meter A piece of test equipment used to measure voltage, current and resistance in an electronic circuit
Engineering Notation A floating point system in which numbers are expressed as products consisting of a number greater than one multiplied by an appropriate power of ten that is some multiple of three
Kirchoff's Current Law The algebraic sum of all currents into and out of any branch point in a circuit must equal zero
Kirchoff's Voltage Law The Algebraic sum of all voltage around any closed path must equal zero
LED Light Emitting Diode. An electronic device that conducts current in one direction and illuminates when it's conducting
Ohm Unit of resistance. Value of one ohm allow current of one ampere with potential difference of one volt.
Ohm's Law In electric circuits, I=V/R
Parallel Circuit One that has two or more branches for separate current from one voltage source
Resistance Opposite to current.Unit is the Ohm
Resistor color code Coding system of colored stripes on a resistor to indicate the resistors value and tolerances
Scientific Notation Numbers entered as a number from one to ten multiplied by a power of ten
Series Circuits One that has only one path current
SI Notation Abbreviation for System International, a system of practical units based on the meter, kilogram, second, ampere, kelvin, mole, and candela
Solder Metallic Alloy of tin and lead that is used to join two metal surfaces
Soldering Process of joining two metallic surfaces to make an electrical contact by melting solder across them
Soldering Tool Tool with an internal heating element used to heat surfaces being soldered to the point where the solder becomes molten.
Breadboard A circuit board for wiring temporary circuits, usually used for prototypes or lab work
Created by: GebreNyabingi

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