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






2. 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






3. A two terminal circuit containing voltage sources - current sources - and resistors can be modeled as a voltage source in series with a resistor






4. A digital code in which each of the decimal digits - 0 through 9 - is represented by a group of four bits






5. The beginning address of a segment of memory






6. Burst extended data output dynamic random- access memory






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






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






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






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






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






13. Describes a number system with a base of ten






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






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






17. The process that prevents two sources from using a bus at the same time






18. The location of a given storage cell or group of cells in a memory; a unique memory location containing on byte






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






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






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






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






23. 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.






24. 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






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






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






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






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






29. Stands for Complementary Metal-Oxide Semiconductor and is implemented with a type of field transistor






30. A document that specifies parameter values and operating conditions for an integrated circuits or other device






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






32. Data Terminal equipment






33. 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.






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






35. An electrical device consisting of two conductive plates separated by an insulating material and possessing the property of capacitance.






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

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






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






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






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






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






42. A bridge circuit that is in the balanced state as indicated by 0 V across the output.






43. 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






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






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






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






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






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






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






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







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