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






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






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






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






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






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






7. 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






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






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






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






11. The total number of data units(bits - nibbles - bytes - words) that a memory can store.






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






13. 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.






14. An electrical instrument used to measure current






15. A type of magnetic tape format






16. Altera HDL; a nonstandard HDL






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






18. The unit of electrical current






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






20. A circuit that selects data from several inputs one at a time in a sequence and places them on the output; also called a multiplexer.






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






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






23. The number of protons in a nucleus






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

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






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






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






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






29. A stage of the DSP pipeline operation in which instructions are assigned to functional units and are decoded.






30. A combined coder and decoder






31. 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






32. 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






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






34. 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






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






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






37. 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






38. 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.






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






40. The beginning address of a segment of memory






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

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






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






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






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






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






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






48. 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.






49. Consisting of numerals - letters - and other characters






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