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






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






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






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






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






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






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






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

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






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

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11. Altera HDL; a nonstandard HDL






12. In Boolean algebra - the OR operation






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






14. 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.






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






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






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






18. A circuit (digital service) that switches digital data from one input line to several output lines in a specified time sequence






19. 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






20. Arithmetic Logic Unit; the key processing element of a microprocessor that perfoms arithmetic and logic operations.






21. 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






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






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






24. A digital counter having ten states






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






26. The effect created when a signal is sampled at less than twice the signal frequency. Aliasing creates unwanted frequencies that interfere with the signal frequency.






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






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






29. A group of eight bits






30. A nominally continuous electrical signal that varies in amplitude or frequency in response to changes in sound - light - heat - position - or pressure.






31. 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






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






33. Burst extended data output dynamic random- access memory






34. 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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35. Having two opposites charge carriers within the transistor structure






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






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






38. 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.






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






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






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






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






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






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






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






46. 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






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






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






49. The mathematics of logic circuits






50. The actual current in a branch







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