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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 beginning address of a segment of memory






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






3. 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.






4. Digital Signal Processor; a special type of microprocessor that processes data in real time






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






6. 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.






7. The main part of a computer responsible for control and processing of data; the core of a DSP that processes the program instructions






8. A electrical property of matter that exist because of an excess or a deficiency of electrons. Can be either positive or negative






9. A nominally continuous electrical signal that varies in amplitude or frequency in response to changes in sound - light - heat - position - or pressure.






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






11. The number of protons in a nucleus






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






13. The law that states ORing several variables and then ANDing the single variable with each of the several variables and the ORing the product






14. An asynchronous input used to reset a flip- flop (make the Q output 0); to place a register or counter in the state in which it contains all 0's






15. In Boolean algebra - the AND operation






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






17. 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






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






19. 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






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






21. 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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22. Basic input/output system; a set of programs in ROM that interfaces the I/) devices in a computer system






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






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






26. 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






27. A code within DOS that allows various operations on files and includes a primitive assembler; to eliminate a problem in hardware or software.






28. The maximum value of a voltage or current






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






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






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






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






33. 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.






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






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






36. An electrical instrument used to measure current






37. A type of magnetic tape format






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






39. A circuit with a complete current path






40. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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






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






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






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






46. A VHDL feature that can be used to predefine the logic function for multiple use throughout a program or programs






47. The unit of electrical current






48. To connect 'end- to- end' as when several counters are connected from the terminal count output of one counter to the enable input of the next counter






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






50. A logic circuit used to add two binary numbers