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






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






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






4. The actual current in a branch






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






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






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






8. The process of producing an output carry in full- adder when both input bits are 1s.






9. Having two directions. the stored data can be shifted right or left






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






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






12. 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






13. The unit of electrical current






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






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






16. 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.






17. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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






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






21. A circuit with a complete current path






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






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

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






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






26. A combined coder and decoder






27. 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.






28. A unit of the cross - sectional area of a wire.






29. A type of bistable multivibrator in which the output assumes the state of the D input on the triggering edge of a clock pulse.






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






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






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






34. A digital circuit capable of counting electronic events - such as pulses - by progressing through a sequence of binary states.






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






36. A type of magnetic tape format






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






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






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






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






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






42. Data Terminal equipment






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






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






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






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






47. A bidirectional set of conductive paths on which data or instruction codes are transferred into a microprocessor or on which the result of an operation is sent out from the microprocessor






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






50. 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.







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