Test your basic knowledge |

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






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






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






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






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






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






7. A program that translates an assembly language program for one type of microprocessor to an assembly language for another type of microprocessor






8. Consisting of numerals - letters - and other characters






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






10. 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.






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






12. A reduction of the output signal compared to the input signal - resulting in a ratio with a value of less than 1 for the output voltage to the input voltage of a circuit.






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






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






15. The mathematics of logic circuits






16. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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






19. 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.






20. A class of integrated logic circuits that is implemented with a type of field effect transistor






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






22. In a PLD - a matrix formed by rows of product- term lines columns of input lines with a programmable cell at each junctions. In VHDL - an array is an ordered set of individual items called elements with a single identifier name.






23. 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






24. In Boolean algebra - the AND operation






25. 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






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






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






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






29. 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.






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






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






32. Having two opposites charge carriers within the transistor structure






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






34. A combined coder and decoder






35. 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






36. A receiving device on a bus






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






38. A method for internally testing a PLD based on the JTAG standard (IEEE std.)






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






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






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






42. Burst extended data output dynamic random- access memory






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






44. 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.






45. A group of eight bits






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






47. Data Communications equipment






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






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






50. The beginning address of a segment of memory