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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. V or E and Volt (V)






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






3. Electronic test equipment that can perform multiple tasks. Typically one capable of measuring voltage - current - and resistance. More sophisticated modern digital multimeters also measure capacitance - inductance - current gain of transistors - and/






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






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






6. 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.






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






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






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






10. Mega






11. Kilo






12. Micro






13. 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.






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






15. Electronic test equipment that can perform multiple tasks. Typically one capable of measuring voltage - current - and resistance. More sophisticated modern digital multimeters also measure capacitance - inductance - current gain of transistors - and/






16. I and Ampere or Amp (A)






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






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






19. Pico






20. 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.






21. V or E and Volt (V)






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






23. 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.






24. 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.






25. Tera






26. A circuit board for wiring temporary circuits - usually used for prototypes or laboratory work.






27. Giga






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






29. 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






30. Giga






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






32. Circuit that is capable of sensing and holding a signal until the event that changed the signal can be addressed.






33. F and Hertz (Hz) or Cycles per sec.






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






35. Abbreviation of System International - a system of practical units based on the meter - kilogram - second - ampere - Kelvin - mole - and candela.






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






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






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






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






40. F and Hertz (Hz) or Cycles per sec.






41. The instantaneous voltage of a waveform. Often used to mean maximum amplitude - or peak voltage - or a pulse.






42. 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.






43. 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.






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






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






46. P and Watt (W)






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






48. 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.






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






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