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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 array of AND gates consisting of a matrix of programmable interconnection






2. 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






3. Dual in - line memory module






4. 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






5. Information in numeric - alphabetic - or other form.






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






7. 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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8. A combined coder and decoder






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






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






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






12. The mathematics of logic circuits






13. The location of a given storage cell or group of cells in a memory; a unique memory location containing on byte






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






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






16. The number of protons in a nucleus






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






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






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






20. 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.






21. A logic circuit used to add two binary numbers






22. Sum of all currents entering a node is equal to the sum of all currents leaving the same node

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






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






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






26. A interconnection of electrical components designed to produce a desired result. A basic circuits consists of a source - a load and an interconnecting current path.






27. Data Communications equipment






28. 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






29. 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.






30. The portion of the CPU that interfaces with the system buses and fetches instructions - reads operands - and writes results.






31. Describes a number system with a base of ten






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






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






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






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

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






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






38. 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






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






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






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






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






43. 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.






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






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






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






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






48. 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






49. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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







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