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






2. 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.






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






4. 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






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






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






7. Stands for Complementary Metal-Oxide Semiconductor and is implemented with a type of field transistor






8. A logic circuit used to add two binary numbers






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






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






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






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






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






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






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






16. Consisting of numerals - letters - and other characters






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






18. 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






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






20. To decrease the binary state of a counter by one






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






22. In a pulse waveform - the height or maximum value of the pulse as measured from its low level.






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






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






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






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






27. Characterized by ten states or values






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






29. A digital counter having ten states






30. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






31. In Boolean algebra - the AND operation






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






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






34. One of the three regions in a bipolar junction transistor






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






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






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






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






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






40. Dual in - line memory module






41. Having two opposites charge carriers within the transistor structure






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






43. The maximum value of a voltage or current






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






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






46. Burst extended data output dynamic random- access memory






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






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

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49. The portion of the CPU that interfaces with the system buses and fetches instructions - reads operands - and writes results.






50. In Boolean algebra - the OR operation