Test your basic knowledge |

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. A bridge circuit that is in the balanced state as indicated by 0 V across the output.






2. In addition (ORing) and multiplication (ANDing) of two variables the order in which the variables are ORed or ANDed makes no difference






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






4. Burst extended data output dynamic random- access memory






5. A theorem that states that any amount of voltage sources and current sources can be combined into a single current source with a parallel resistor.


6. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






7. American wire gauge; a standardization based on wire diameter






8. A software compiler language for SPLD programming; a type of hardware description language (HDL)






9. A nominally continuous electrical signal that varies in amplitude or frequency in response to changes in sound - light - heat - position - or pressure.






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






11. In Boolean algebra - the AND operation






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






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






14. An array of AND gates consisting of a matrix of programmable interconnection






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






16. A relatively small - high- speed memory that stores the most recently used instructions or data from the larger but slower main memory






17. Consisting of numerals - letters - and other characters






18. The process of converting an analog signal to digital form






19. Characterized by ten states or values






20. A unit of the cross - sectional area of a wire.






21. 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.






22. 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.






23. A binary digit - which can be either 1 or 0






24. A connection at the midpoint of a winding in a transformer






25. An energy source that uses a chemical reaction to convert chemical energy into electrical energy.






26. Sum of all the voltage drops in series equals to the source voltage


27. A set of conductive paths hat connects the CPU to other parts of the computer to coordinate its operations and to communicate with external devices






28. In a PLD - a matrix formed by rows of product- term lines columns of input lines with a programmable cell at each junctions. In VHDL - an array is an ordered set of individual items called elements with a single identifier name.






29. The beginning address of a segment of memory






30. 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.






31. The time from the application of a valid memory address to the appearance of valid output data






32. The process of producing an output carry in full- adder when both input bits are 1s.






33. An electrical instrument used to measure current






34. To connect 'end- to- end' as when several counters are connected from the terminal count output of one counter to the enable input of the next counter






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






36. Data Terminal equipment






37. 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






38. Arithmetic Logic Unit; the key processing element of a microprocessor that perfoms arithmetic and logic operations.






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






40. A combination of logic gates interconnected to produce a specified Boolean function with no storage or memory capability; sometimes called combinatorial logic






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






42. The actual current in a branch






43. Having two directions. the stored data can be shifted right or left






44. A digital counter having ten states






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






46. The application of a dc voltage to an electronic device to produce a desired mode of operation






47. A group of eight bits






48. A method for the automated testing of printed circuit boards in which the board is mounted on a fixture that resembles a bed of nails that makes contact with test points






49. 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






50. A semiconductor device that conducts current in only one direction