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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. The process of converting an analog signal to digital form






3. In addition - the number to which the addend is added






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






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






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






7. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






8. One of the three regions in a bipolar Junction transistor(North junction of NpN)






9. A combined coder and decoder






10. An electrical instrument used to measure current






11. Consisting of numerals - letters - and other characters






12. A series of bits describing a final design that is sent to the target device during programming






13. The portion within the microprocessor that provides the timing and control signals for getting data into and out of the microprocessor and for synchronizing the execution of instructions.






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






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






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






17. 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.






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






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






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






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






22. A program that converts English- like mnemonics into machine code






23. 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.






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

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25. The inverse of opposite of a number - in Boolean algebra - the inverse function - expressed with a bar over the variable. The complement of a 1 is a 0 - and vice versa






26. Having two values or states; describes a number system that has a base of two and utilizes 1 and 0 as its digits






27. A complex programmable logic device that consists basically of muliple SPLD arrays with programmable interconnections.






28. Having no stable state. An astable multivibrator oscillates between two quasi- stable states.






29. 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






30. Altera HDL; a nonstandard HDL






31. 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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32. A digital circuit device that converts coded information into another (familiar) or noncoded form






33. 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






34. The number of protons in a nucleus






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






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






37. 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.






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






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






40. A type of bistable multivibrator in which the output assumes the state of the D input on the triggering edge of a clock pulse.






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






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






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






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






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






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






47. Dual in - line memory module






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






49. The interval of time occupied by a single bit in a sequence of bits; the period of the clock






50. A device used to convert an analog signal to a sequence of digital codes