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






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






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






4. A binary digit - which can be either 1 or 0






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






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






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






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






10. A code within DOS that allows various operations on files and includes a primitive assembler; to eliminate a problem in hardware or software.






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






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






13. The range of frequencies for which the current (or output voltage) is equal to or greater than 70.7% of its value at the resonant frequency that is considered to be passed by a filter.






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






15. In addition - the number that is added to another number called the augend






16. A electrical property of matter that exist because of an excess or a deficiency of electrons. Can be either positive or negative






17. In Boolean algebra - the OR operation






18. A relatively small - high- speed memory that stores the most recently used instructions or data from the larger but slower main memory






19. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






20. Consisting of numerals - letters - and other characters






21. The ability of a capacitor to store electrical charge.






22. An electrical instrument used to measure current






23. A circuit (digital service) that switches digital data from one input line to several output lines in a specified time sequence






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






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






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






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






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






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






30. In Boolean algebra - the AND operation






31. A group of eight bits






32. Having two stable states. Flip- flops and latches are bistable multivibrators.






33. A digital counter having ten states






34. 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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35. 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






36. 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






37. A document that specifies parameter values and operating conditions for an integrated circuits or other device






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






39. 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






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






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






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






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






44. 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.






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






46. A circuit with a complete current path






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






48. The basic timing signal in a digital system; a periodic waveform in which the interval between pulses equals the time for one bit; the triggering input of a flip- flop






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






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







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