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






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






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






4. 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






5. Digital audio tape; a type of magnetic tape format






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






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






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






9. Data Terminal equipment






10. A type of bistable multivibrator in which the output assumes the state of the D input on the triggering edge of a clock pulse.






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






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






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






14. American wire gauge; a standardization based on wire diameter






15. A unit of the cross - sectional area of a wire.






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

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






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






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






20. 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.






21. The mathematics of logic circuits






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






23. 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






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






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






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






27. 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






28. 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.






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






30. A circuit with a complete current path






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






32. 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.






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






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






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






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






39. A condition where all the load currents are equal and the neutral current is zero






40. A combined coder and decoder






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






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






43. Data Communications equipment






44. The unit of electrical current






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






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






47. In addition (Oring) and multiplication (ANDing) of three or more variables - the order in which the variables are grouped makes no difference






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






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






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