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






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






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






4. The number of protons in a nucleus






5. In Boolean algebra - the OR operation






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






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






9. The beginning address of a segment of memory






10. 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






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






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






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






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






15. Data Terminal equipment






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






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






18. A relatively small - high- speed memory that stores the most recently used instructions or data from the larger but slower main memory






19. An arrangement of electrical and/or electronic components interconnected in such a way as to perform a specified function






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






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






22. 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.






23. 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






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






25. Consisting of numerals - letters - and other characters






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






27. Characterized by ten states or values






28. 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






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






30. Having two opposites charge carriers within the transistor structure






31. 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






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






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






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






35. 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.






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






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






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






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






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






41. Burst extended data output dynamic random- access memory






42. In a division operation the quantity that is being divided






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






44. A type of magnetic tape format






45. A combined coder and decoder






46. An electrical instrument used to measure current






47. The mathematics of logic circuits






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






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