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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. Dual in - line memory module






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






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






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






6. A interconnection of electrical components designed to produce a desired result. A basic circuits consists of a source - a load and an interconnecting current path.






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






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






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






10. One current path in a parallel circuit; a current path that connects two nodes






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






12. 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.






13. An application program in development software packages that controls the design flow process and translates source code into object code in a format that can be logically tested or downloaded to a target device






14. 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






15. An asynchronous input used to reset a flip- flop (make the Q output 0); to place a register or counter in the state in which it contains all 0's






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






17. The mathematics of logic circuits






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






19. A group of eight bits






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






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






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






23. 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.






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






25. 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






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






27. The beginning address of a segment of memory






28. 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






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






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






31. Having two opposites charge carriers within the transistor structure






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. American National Standards Institute






34. An electrical instrument used to measure current






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






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






37. A combination of logic gates interconnected to produce a specified Boolean function with no storage or memory capability; sometimes called combinatorial logic






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






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






40. 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






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






42. 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.






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






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






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






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

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47. Burst extended data output dynamic random- access memory






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






49. 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






50. In Boolean algebra - the OR operation







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