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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 type of inductor used to block or choke off high frequencies






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






3. To connect 'end- to- end' as when several counters are connected from the terminal count output of one counter to the enable input of the next counter






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






5. 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.






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






7. A combined coder and decoder






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






9. The process of rippling an input carry to become the output carry in a full- adder when either or both of the input bits are 1's and the input carry is a 1






10. Consisting of numerals - letters - and other characters






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






12. 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






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






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






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






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






17. Altera HDL; a nonstandard HDL






18. In addition (ORing) and multiplication (ANDing) of two variables the order in which the variables are ORed or ANDed makes no difference






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






20. A set of conductive paths hat connects the CPU to other parts of the computer to coordinate its operations and to communicate with external devices






21. Having two opposites charge carriers within the transistor structure






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






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






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






25. Burst extended data output dynamic random- access memory






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






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






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






29. 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






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






31. A circuit with a complete current path






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






33. A unit of logic in an FPGA that is made up of multiple smaller logic modules and a local programmable interconnect that is used to connect logic modules within the CLB






34. 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






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






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






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






38. Characterized by ten states or values






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

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






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






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






43. 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.






44. A circuit that prevents loading of an input or output






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






46. 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.






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






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






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






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






Can you answer 50 questions in 15 minutes?



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