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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. I and Ampere or Amp (A)






2. 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.






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






4. P and Watt (W)






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






6. 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.






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






8. 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.






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






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






11. 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/






12. Kilo






13. Micro






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






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






16. Insulating board containing conductive tracks for circuit connections.






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






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






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






20. Giga






21. Are and Ohms






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






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






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






25. An electrical device used to store electrical charge.






26. V or E and Volt (V)






27. 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






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






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






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






31. P and Watt (W)






32. Micro






33. 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.






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






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






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






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






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






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






40. Giga






41. 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.






42. Insulating board containing conductive tracks for circuit connections.






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






44. Mega






45. 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.






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






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






49. Mega






50. Kilo