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# DE Unit 1.1

### Important Terms for Digital Electronics

TermDefinitionWord in a Sentence
Analog A way of representing some physical quantity, such as temperature or velocity, by a proportional continuous voltage or current. An analog voltage or current can have any value within a defined range. To know the exact time, check an analog clock.
Breadboard A circuit board for wiring temporary circuits, usually used for prototypes or laboratory work. Using breadboards for labs allow for mistakes to be made and lessons to be learned because the circuits created are temporary.
Conventional Current The direction of current flow associated with positive charge in motion. The current flow direction is from a positive to negative potential, which is in the opposite direction of electron flow. When we label the flow of a current in a circuit, we label the flow of the conventional current.
Current A movement of electrical charges around a closed path or circuit. Current is what passes through your body when you get shocked.
Digital A way of representing a physical quantity by a series of binary numbers. A digital representation can have only specific discrete values. Most of the clocks we use today are digital.
Digital Multi-Meter(DMM) A piece of test equipment used to measure voltage, current, and resistance in an electronic circuit. We use a multi-meter in labs to measure voltage, current, and resistance.
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. Engineering notation is very similar to scientific notation.
Kirchhoff’s Current Law (KCL) The algebraic sum of all currents into and out of any branch point in a circuit must equal zero. You use KCL to determine the current in a circuit.
Kirchhoff’s Voltage Law (KVL) The algebraic sum of all voltages around any closed path must equal zero. You use KVL to determine the voltage in a circuit.
LED Light-emitting diode. An electronic device that conducts current in one direction only and illuminates when it is conducting. We can use LED's to verify that current is passing through a circuit.
Ohm Unit of resistance. Value of one ohm allow current of one ampere with potential difference of one volt. Ohms are equal to the resistance in a circuit.
Ohm’s Law In electric circuits, I=V/R. Ohms law is used to find out the voltage, current, and resistance in a circuit.
Parallel Circuit One that has two or more branches for separate current from one voltage source. A parallel circuit carries the same amount of voltage throughout the circuit.
Resistance Opposition to current. Unit is the ohm. Resistance reduces the amount of current flowing throughout a circuit.
Resistor Color Code Coding system of colored stripes on a resistor to indicate the resistor's value and tolerance. The resistor color code can be used to create a resistor with a specific value of resistance and a specific level of tolerance.
Scientific Notation Numbers entered as a number from one to ten multiplied by a power of ten. Scientific notation is similar to engineering notation.
Series Circuit One that has only one path current. A series circuit consists of voltage drops but a consistent current.
Simulation Testing design function by specifying a set of inputs and observing the resultant outputs. Simulation is generally shown as a series of input and output wave forms. Simulation is used to find out what kind of outputs you get from certain inputs.
SI Notation Abbreviation of System International, a system of practical units based on the meter, kilogram, second, ampere, Kelvin, mole, and candela. SI Notation is what the rest of the world uses. The United States utilizes imperial notation.
Solder Metallic alloy of tin and lead that is used to join two metal surfaces. When you want to bond 2 metal surfaces, you solder them together.
Soldering Process of joining two metallic surfaces to make an electrical contact by melting solder (usually tin and lead) across them. Soldering is the combining of 2 metal surfaces.
Soldering Iron Tool with an internal heating element used to heat surfaces being soldered to the point where the solder becomes molten. A soldering iron is the tool that allows 2 metal surfaces to be soldered together.
Created by: fuhnyboypedro