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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. The process of rippling an input carry to become the output carry in a full- adder when either or both of the input bits are 1's and the input carry is a 1






2. Having two opposites charge carriers within the transistor structure






3. 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.






4. The current left after the total load current is subtracted from the total current into the circuit






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






6. 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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7. 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.






8. The digit generated when the sum of two binary digits exceeds 1






9. 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






10. A method of analog- to- digital conversion using a 1- bit quantization process






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






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






13. An application program in development software packages that controls the design flow process and translates source code into object code in a format that can be logically tested or downloaded to a target device






14. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






15. The graph of a filter's frequency response showing the change in the output voltage to input voltage ratio expressed in dB as a function of frequency for a constant input voltage






16. An electrical instrument used to measure current






17. A one- way group of conductors from the to a memory - or other external device - on which the address code is sent






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






19. Bipolar junction transistor; a semiconductor device used for switching or amplification. A BJT has two junctions - the base- emitter junction and the base- collector junction






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






21. A type of inductor used to block or choke off high frequencies






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






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






24. A type of PLD nonvolatile programmable link that can be left open or can be shorted once as directed by the program






25. The average of a sine wave over one half- cycle. It is 0.637 times the peak value.






26. The process or sequence of operations carried out to program a target device






27. A circuit that prevents loading of an input or output






28. The phasor combination of resistive power (true power) and reactive power. The unit is the volt- amperes (VA).






29. A reduction of the output signal compared to the input signal - resulting in a ratio with a value of less than 1 for the output voltage to the input voltage of a circuit.






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






31. A type of semiconductor memory having capacitive storage cells that lose stored data over a period of time and therefore must be refreshed.






32. In addition (Oring) and multiplication (ANDing) of three or more variables - the order in which the variables are grouped makes no difference






33. The ratio of pulse width to period expressed as a percentage






34. The action of a circuit in which it accepts current into its output from a load






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






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






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






38. Characterized by ten states or values






39. The smallest particle of an element possessing the unique characteristics of that element.






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






41. A unit of logic in an FPGA that is made up of multiple smaller logic modules and a local programmable interconnect that is used to connect logic modules within the CLB






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






43. A digital circuit that compares the magnitudes of two quantiities and produces an output indicating the relationship of the quantities






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






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






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






47. A measure of the ability of a reactive circuit to permit current; the reciprocal of impedance. the unit is the siemens






48. Having two stable states. Flip- flops and latches are bistable multivibrators.






49. Transistor-Transistor Logic and is implemented with bipolar junction transistors






50. An asynchronous input used to reset a flip- flop (make the Q output 0); to place a register or counter in the state in which it contains all 0's