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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. 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.






2. 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.






3. 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.






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






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






6. Kilo






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






8. V or E and Volt (V)






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






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






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






12. 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.






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






14. 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.






15. Giga






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






17. 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.






18. Are and Ohms






19. Insulating board containing conductive tracks for circuit connections.






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






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






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






23. Tera






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






25. 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.






26. Milli






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






28. Signal in the form of a rectangular pulse train or a square wave.






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






30. Mega






31. I and Ampere or Amp (A)






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






33. Nano






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






35. 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/






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






37. 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.






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






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






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






41. 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.






42. 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.






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






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






45. C and Farad (F)






46. 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






47. Kilo






48. 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






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






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