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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. Altera HDL; a nonstandard HDL






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






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






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






5. Burst extended data output dynamic random- access memory






6. 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






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






8. Bipolar junction transistor; a semiconductor device used for switching or amplification. A BJT has two junctions - the base- emitter junction and the base- collector junction






9. A combined coder and decoder






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






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






12. 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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13. 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






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






15. The current left after the total load current is subtracted from the total current into the circuit






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






17. A type of semiconductor memory that stores data in the form of charge packets and is serially accessed






18. A type of magnetic tape format






19. In addition - the number that is added to another number called the augend






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






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. A document that specifies parameter values and operating conditions for an integrated circuits or other device






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






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






25. 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






26. The mathematics of logic circuits






27. The number of protons in a nucleus






28. A receiving device on a bus






29. 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.






30. Characterized by ten states or values






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






32. 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






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






34. 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.






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






36. Dynamic random- access memory; a type of semiconductor memory that uses capacitors as the storage elements and is a volatile - read/write memory






37. Data Terminal equipment






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






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






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






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






42. Data Communications equipment






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






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






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






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






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






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






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






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