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Digital Fundamentals

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. Data Communications equipment






2. The process that prevents two sources from using a bus at the same time






3. The opposition of a capacitor to permit current; the reciprocal of capacitive reactance. The unit is the siemens.






4. A filter that rejects a range of frequencies lying between two critical frequencies and passes frequencies above and below that range.






5. A group of eight bits






6. A type of IC package whose leads must pass through holes to the other side of a PC board






7. A two terminal circuit containing voltage sources - current sources - and resistors can be modeled as a voltage source in series with a resistor






8. One current path in a parallel circuit; a current path that connects two nodes






9. A programming language that uses English like words and has a one- to- one correspondence to machine language






10. A digital circuit capable of counting electronic events - such as pulses - by progressing through a sequence of binary states.






11. The VHDL unit that describes the internal operation of a logic function; the internal functional arrangement of the elements that give a device its particular operating characteristics.






12. Characteristic of cells in a Karnaugh map in which there is a single- variable change from one cell to another cell next to it on any of its four sides






13. One of the three regions in a bipolar junction transistor






14. Consisting of numerals - letters - and other characters






15. A resettable protective device used for interrupting execessive current in an electric circuit






16. In Boolean algebra - the AND operation






17. An expression of variables and operators used to express the operation of a logic circuit






18. Burst extended data output dynamic random- access memory






19. An instrument that can specify each of the other instruments on the bus as either a talker or a listener for the purpose of data transfer.






20. The basic timing signal in a digital system; a periodic waveform in which the interval between pulses equals the time for one bit; the triggering input of a flip- flop






21. A program that translates an assembly language program for one type of microprocessor to an assembly language for another type of microprocessor






22. A combination of input literals that cannot occur and can be used as a 1 or 0 on a Karnaugh Map for simplification

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23. A notational system for logic symbols that specifies input and output relationships thus fully defining a given function






24. A combined coder and decoder






25. A condition where all the load currents are equal and the neutral current is zero






26. The range of frequencies for which the current (or output voltage) is equal to or greater than 70.7% of its value at the resonant frequency that is considered to be passed by a filter.






27. The effect created when a signal is sampled at less than twice the signal frequency. Aliasing creates unwanted frequencies that interfere with the signal frequency.






28. A bidirectional set of conductive paths on which data or instruction codes are transferred into a microprocessor or on which the result of an operation is sent out from the microprocessor






29. An electrical device consisting of two conductive plates separated by an insulating material and possessing the property of capacitance.






30. An adverse condition that could occur if two or more devices try to communicate at the same time on a bus






31. A method for internally testing a PLD based on the JTAG standard (IEEE std.)






32. The main part of a computer responsible for control and processing of data; the core of a DSP that processes the program instructions






33. The beginning address of a segment of memory






34. In addition - the number that is added to another number called the augend






35. In relation to VHDL feature that permits operations to be processed in a parallel;that is operations that occur simultaneously






36. A set of interconnections that interface one or more devices based on a standardized specification






37. A number given in ampere- hours determined by multiplying the current times the length of the time (h) a battery can deliver that current to a load






38. Dynamic random- access memory; a type of semiconductor memory that uses capacitors as the storage elements and is a volatile - read/write memory






39. In a pulse waveform - the height or maximum value of the pulse as measured from its low level.






40. Characterized by ten states or values






41. The ability of a capacitor to store electrical charge.






42. American Standard Code for Information Interchange; the most widely used alphanumeric code.






43. Altera HDL; a nonstandard HDL






44. Stands for Complementary Metal-Oxide Semiconductor and is implemented with a type of field transistor






45. A class of integrated logic circuits that is implemented with a type of field effect transistor






46. A filter that passes a range of frequencies lying between two critical freqencies and rejects frequencies above and below that range.






47. A basic logic operation in which a true(high) output occurs only when all the input conditions are true (high)






48. The maximum value of a voltage or current






49. A type of counter in which each stage is clocked from the output of the preceding stage.






50. A electrical property of matter that exist because of an excess or a deficiency of electrons. Can be either positive or negative