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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. 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






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






3. 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






4. The rotational rate of a phasor which is related to the frequency of the sine wave that the phasor represents






5. The mathematics of logic circuits






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






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






8. 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.






9. 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.






10. Digital audio tape; a type of magnetic tape format






11. A digital counter having ten states






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






13. A logic gate that produces a High output only when all of the inputs are HIGH






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






15. 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






16. 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.

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






18. 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.






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






20. A group of eight bits






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






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






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






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






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






26. American National Standards Institute






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






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






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






30. Having two opposites charge carriers within the transistor structure






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






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






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






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






35. 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






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






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






38. 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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39. A type of semiconductor memory that stores data in the form of charge packets and is serially accessed






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






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

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






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






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






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






46. 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






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






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






49. Burst extended data output dynamic random- access memory






50. To decrease the binary state of a counter by one







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