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






2. The opposition of a capacitor to permit current; the reciprocal of capacitive reactance. The unit is the siemens.






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






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






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






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






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






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






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






10. A bridge circuit that is in the balanced state as indicated by 0 V across the output.






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






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






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

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14. A unit of logic in an FPGA that is made up of multiple smaller logic modules and a local programmable interconnect that is used to connect logic modules within the CLB






15. One of the three regions in a bipolar junction transistor






16. 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.






17. 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






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






19. The beginning address of a segment of memory






20. 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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21. In addition - the number to which the addend is added






22. 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






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






24. A circuit with a complete current path






25. A circuit that prevents loading of an input or output






26. The unit of electrical current






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






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






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






30. A digital counter having ten states






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






32. 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






33. The graph of a filter's frequency response showing the change in the output voltage to input voltage ratio expressed in dB as a function of frequency for a constant input voltage






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






35. The maximum value of a voltage or current






36. A one- way group of conductors from the to a memory - or other external device - on which the address code is sent






37. A transformer in which the primary and secondary are in a single winding






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






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






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






42. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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






45. A resettable protective device used for interrupting execessive current in an electric circuit






46. In Boolean algebra - the AND operation






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






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






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






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