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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. An arrangement of electrical and/or electronic components interconnected in such a way as to perform a specified function






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






3. The average of a sine wave over one half- cycle. It is 0.637 times the peak value.






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






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






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






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






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






9. In Boolean algebra - the OR operation






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






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






12. 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.






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






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






15. The unit of electrical current






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






17. Characterized by ten states or values






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






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






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






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






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






23. The application of a dc voltage to an electronic device to produce a desired mode of operation






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






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






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






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






28. The portion within the microprocessor that provides the timing and control signals for getting data into and out of the microprocessor and for synchronizing the execution of instructions.






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






30. 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.






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






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






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






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






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






36. Data Communications equipment






37. Dual in - line memory module






38. Describes a number system with a base of ten






39. Burst extended data output dynamic random- access memory






40. 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






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






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






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






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






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






46. The beginning address of a segment of memory






47. The actual current in a branch






48. A measure of the ability of a reactive circuit to permit current; the reciprocal of impedance. the unit is the siemens






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






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