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Digital Electronics Vocab

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Abbreviation of System International - a system of practical units based on the meter - kilogram - second - ampere - Kelvin - mole - and candela.






2. A protective device in the current path that melts or breaks when current exceeds a predetermined maximum value.






3. A series of logic 1s and 0s plotted as a function of time.






4. A group of flip-flops (typically 4 or 8) that are arranged so that the values stored in the flip-flops are shifted from one flip-flop to the next for every clock.






5. The smallest particle of an element that still has the same characteristics as the element.






6. An electrical device used to store electrical charge.






7. An array of seven independently controlled light-emitting diodes (LED) or liquid crystal display (LCD) elements - shaped like a figure-8 - which can be used to display decimal digits and other characters by turning on the appropriate elements.






8. Coding system of colored stripes on a resistor to indicate the resistor's value and tolerance.






9. A protective device in the current path that melts or breaks when current exceeds a predetermined maximum value.






10. I and Ampere or Amp (A)






11. P and Watt (W)






12. The process of applying a thin coat of solder to materials prior to their being soldered; for example - application of a light coat of solder to the filaments of a conductor to hold the filaments in place prior to soldering the conductor.






13. Tool with an internal heating element used to heat surfaces being soldered to the point where the solder becomes molten.






14. Milli






15. A square IC package with leads on all four sides designed for surface mounting on a circuit board.






16. A solder connection that exhibits poor wetting and is characterized by a grayish - porous appearance due to excessive impurities in the solder - inadequate cleaning prior to soldering - and/or the insufficient application of heat during the soldering






17. A solder connection that exhibits poor wetting and is characterized by a grayish - porous appearance due to excessive impurities in the solder - inadequate cleaning prior to soldering - and/or the insufficient application of heat during the soldering






18. Nano






19. 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.






20. V or E and Volt (V)






21. I and Ampere or Amp (A)






22. A way of representing a physical quantity by a series of binary numbers. A digital representation can have only specific discrete values.






23. Kilo






24. An array of seven independently controlled light-emitting diodes (LED) or liquid crystal display (LCD) elements - shaped like a figure-8 - which can be used to display decimal digits and other characters by turning on the appropriate elements.






25. Micro






26. An IC package similar to a DIP - but smaller - which is designed for automatic placement and soldering on the surface of a circuit board.






27. Process of joining two metallic surfaces to make an electrical contact by melting solder (usually tin and lead) across them.






28. A circuit the produces a digital output signal that is half the frequency of the input.






29. A very common IC package with two parallel rows of pins intended to be inserted into a socket of through holes drilled in a printed circuit board.






30. A very common IC package with two parallel rows of pins intended to be inserted into a socket of through holes drilled in a printed circuit board.






31. Light-emitting diode. An electronic device that conducts current in one direction only and illuminates when it is conducting.






32. Term derived from 'transfer resistor.' Semiconductor device that can be used as an amplifier or as an electronic switch.






33. Giga






34. The unwanted formation of a conductive path of solder between conductors.






35. Tool with an internal heating element used to heat surfaces being soldered to the point where the solder becomes molten.






36. Any material that allows the free movement of electric changes - such as electrons - to provide an electric current.






37. Tera






38. A two terminal device that conducts in only one direction.






39. C and Farad (F)






40. Insulating board containing conductive tracks for circuit connections.






41. P and Watt (W)






42. An electrical device used to store electrical charge.






43. Component made of material that opposes flow of current and therefore has some value of resistance.






44. A movement of electrical charges around a closed path or circuit.






45. Metallic alloy of tin and lead that is used to join two metal surfaces.






46. Metallic alloy of tin and lead that is used to join two metal surfaces.






47. Light-emitting diode. An electronic device that conducts current in one direction only and illuminates when it is conducting.






48. Numbers entered as a number from one to ten multiplied by a power of ten.






49. Insulating board containing conductive tracks for circuit connections.






50. Tera