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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. One of the three regions in a bipolar Junction transistor(North junction of NpN)






2. 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






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 ability of a capacitor to store electrical charge.






5. A digital code in which each of the decimal digits - 0 through 9 - is represented by a group of four bits






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






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






8. A program that translates an assembly language program for one type of microprocessor to an assembly language for another type of microprocessor






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






10. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






11. 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.






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






13. In addition (ORing) and multiplication (ANDing) of two variables the order in which the variables are ORed or ANDed makes no difference






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






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






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






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






19. The average of a sine wave over one half- cycle. It is 0.637 times the peak value.






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






21. 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.






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






23. 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






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






25. 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






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






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






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






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






30. A two terminal circuit containing voltage sources - current sources - and resistors can be modeled as a voltage source in series with a resistor






31. 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






32. A binary digit - which can be either 1 or 0






33. Altera HDL; a nonstandard HDL






34. A software compiler language for SPLD programming; a type of hardware description language (HDL)






35. The interval of time occupied by a single bit in a sequence of bits; the period of the clock






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






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






38. A type of counter in which each stage is clocked from the output of the preceding stage.






39. Characterized by ten states or values






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






41. The maximum value of a voltage or current






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






43. A digital counter having ten states






44. 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.






45. The process of converting an analog signal to digital form






46. A type of inductor used to block or choke off high frequencies






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






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






49. The process that prevents two sources from using a bus at the same time






50. Digital audio tape; a type of magnetic tape format







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