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# DE 1.1-Nalina

### Vocab for digital electronics 1.1 unit

Term | Definition | Example |
---|---|---|

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 | The clock on the wall is analog because the values are constantly changing |

Breadboard | A circuit board for wiring temporary circuits, usually used for prototypes or laboratory work. | We used a breadboard to test our circuit ideas |

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. | A conventional current is needed for proper circuit |

Current | A movement of electrical charges around a closed path or circuit. | we measured the current using an ammeter |

Digital | A way of representing a physical quantity by a series of binary numbers. A digital representation can have only specific discrete values. | The microwave clock is digital because it only changes per minute |

Digital Multi-Meter(DMM) | A piece of test equipment used to measure voltage, current, and resistance in an electronic circuit. | The voltage measured on the multi meter was 12 V |

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. | 10^6 instead of something like 1000^2 |

Kirchhoff’s Current Law (KCL) | The algebraic sum of all currents into and out of any branch point in a circuit must equal zero. | Kirchhoff's law is used a lot in calculations |

LED | Light-emitting diode. An electronic device that conducts current in one direction only and illuminates when it is conducting. | We use tiny LED lights to test circuits |

Ohm | Unit of resistance. Value of one ohm allow current of one ampere with potential difference of one volt. | Named after Georg Simon Ohm |

Ohm’s Law | In electric circuits, I=V/R. | Ohms law gives us a formula that we use in calculations |

Parallel Circuit | One that has two or more branches for separate current from one voltage source. | The amount of current that is in each section is different in a parallel circuit |

Resistance | Opposition to current. Unit is the ohm. | resistance is measured on ohms |

Resistor Color Code | Coding system of colored stripes on a resistor to indicate the resistor's value and tolerance. | silver bands mean a 10% tolerance resistor |

Scientific Notation | Numbers entered as a number from one to ten multiplied by a power of ten | Instead of writing .00056 we write 5.6 x 10^-4 |

Series Circuit | One that has only one path current. | Current is all the same in a series circuit |

SI Notation | Abbreviation of System International, a system of practical units based on the meter, kilogram, second, ampere, Kelvin, mole, and candela. | For example using Si notation, ohms would be R |

Solder | Metallic alloy of tin and lead that is used to join two metal surfaces. | When certain components are not as easily fusible, we use solder. |

Soldering | Process of joining two metallic surfaces to make an electrical contact by melting solder (usually tin and lead) across them. | Soldering allows us to fuse parts together |

Soldering iron | Tool with an internal heating element used to heat surfaces being soldered to the point where the solder becomes molten. | we use a soldering iron when we need to fuse materials. |