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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 maximum value of a voltage or current






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

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3. 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.






4. The number of protons in a nucleus






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






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






7. American National Standards Institute






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






9. A type of inductor used to block or choke off high frequencies






10. 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






11. 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






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






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






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






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






16. The effect created when a signal is sampled at less than twice the signal frequency. Aliasing creates unwanted frequencies that interfere with the signal frequency.






17. A stage of the DSP pipeline operation in which instructions are assigned to functional units and are decoded.






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






19. Describes a number system with a base of ten






20. Having two values or states; describes a number system that has a base of two and utilizes 1 and 0 as its digits






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






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






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






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






25. A theorem that states that any amount of voltage sources and current sources can be combined into a single current source with a parallel resistor.

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26. In Boolean algebra - the OR operation






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






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






31. Data Terminal equipment






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






33. The normal level of a pulse waveform; the voltage level in the absence of a pulse.






34. 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






35. A digital circuit that compares the magnitudes of two quantiities and produces an output indicating the relationship of the quantities






36. The mathematics of logic circuits






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






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






39. A program that converts English- like mnemonics into machine code






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






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






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






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






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






45. Altera HDL; a nonstandard HDL






46. A type of magnetic tape format






47. The process of converting an analog signal to digital form






48. The phasor combination of resistive power (true power) and reactive power. The unit is the volt- amperes (VA).






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






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