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






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






3. 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.






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






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






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






7. In Boolean algebra - the OR operation






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






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






10. 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.






11. Dual in - line memory module






12. The mathematics of logic circuits






13. A logic circuit used to add two binary numbers






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






15. In addition - the number to which the addend is added






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






17. Characteristic of cells in a Karnaugh map in which there is a single- variable change from one cell to another cell next to it on any of its four sides






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






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






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






21. A set of conductive paths hat connects the CPU to other parts of the computer to coordinate its operations and to communicate with external devices






22. 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






23. The maximum value of a voltage or current






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

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






26. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






28. The portion within the microprocessor that provides the timing and control signals for getting data into and out of the microprocessor and for synchronizing the execution of instructions.






29. A digital counter having ten states






30. 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






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






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

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33. Data Communications equipment






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






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






36. Data Terminal equipment






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






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






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






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






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






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






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






44. Burst extended data output dynamic random- access memory






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






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






47. 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






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






49. Characterized by ten states or values






50. Direct memory access; a method to directly interface a peripheral device to memory without using the CPU for control