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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. 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.






2. An electrical instrument used to measure current






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






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






5. 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.






6. 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






7. The current left after the total load current is subtracted from the total current into the circuit






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






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






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






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






12. Altera HDL; a nonstandard HDL






13. 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.






14. 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






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






16. Consisting of numerals - letters - and other characters






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






18. American National Standards Institute






19. 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






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






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






22. Data Communications equipment






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






24. A combined coder and decoder






25. Arithmetic Logic Unit; the key processing element of a microprocessor that perfoms arithmetic and logic operations.






26. 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






27. A type of magnetic tape format






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






29. In Boolean algebra - the AND operation






30. Describes a number system with a base of ten






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






32. 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






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

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






35. The mathematics of logic circuits






36. A digital circuit capable of counting electronic events - such as pulses - by progressing through a sequence of binary states.






37. 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






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






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






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






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






42. Characterized by ten states or values






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






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






45. A group of eight bits






46. The number of protons in a nucleus






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






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






49. 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






50. The unit of electrical current