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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. One of the three regions in a bipolar Junction transistor(North junction of NpN)






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






3. The action of a circuit in which it accepts current into its output from a load






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






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






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






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






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






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






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






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






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






13. American National Standards Institute






14. A program that translates an assembly language program for one type of microprocessor to an assembly language for another type of microprocessor






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






16. The time from the application of a valid memory address to the appearance of valid output data






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






18. A type of counter in which each stage is clocked from the output of the preceding stage.






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

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

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






22. 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.






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






24. 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.






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






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






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






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






29. 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






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






31. A transformer in which the primary and secondary are in a single winding






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






33. In Boolean algebra - the OR operation






34. An energy source that uses a chemical reaction to convert chemical energy into electrical energy.






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






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






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






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






39. 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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40. The number of protons in a nucleus






41. 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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42. Dual in - line memory module






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






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






45. An array of AND gates consisting of a matrix of programmable interconnection






46. 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






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






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






49. Data Communications equipment






50. A digital counter having ten states