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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 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






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






3. A combined coder and decoder






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






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






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






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






8. 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






9. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






11. 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.






12. Basic input/output system; a set of programs in ROM that interfaces the I/) devices in a computer system






13. The unit of electrical current






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






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






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






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






18. Describes a number system with a base of ten






19. A VHDL feature that can be used to predefine the logic function for multiple use throughout a program or programs






20. Dual in - line memory module






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






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






23. A digital counter having ten states






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






25. A group of eight bits






26. In a division operation the quantity that is being divided






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






28. American National Standards Institute






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






30. The process of producing an output carry in full- adder when both input bits are 1s.






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






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






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






34. A method of analog- to- digital conversion using a 1- bit quantization process






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






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






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






38. 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






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






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






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






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






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






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






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






47. 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






48. Data Terminal equipment






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






50. Altera HDL; a nonstandard HDL