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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. Data Communications equipment






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






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






4. 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.






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






6. The unit of electrical current






7. A logic circuit used to add two binary numbers






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






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






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






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






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






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






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






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






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






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






18. Dual in - line memory module






19. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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






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






23. A notational system for logic symbols that specifies input and output relationships thus fully defining a given function






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






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






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






27. The phasor combination of resistive power (true power) and reactive power. The unit is the volt- amperes (VA).






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






29. 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






30. In addition (Oring) and multiplication (ANDing) of three or more variables - the order in which the variables are grouped makes no difference






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






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






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






34. Transistor-Transistor Logic and is implemented with bipolar junction transistors






35. 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






36. The number of protons in a nucleus






37. 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






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






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






40. A logic gate that produces a High output only when all of the inputs are HIGH






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






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






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






46. The normal level of a pulse waveform; the voltage level in the absence of a pulse.






47. A combined coder and decoder






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






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






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