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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. To decrease the binary state of a counter by one






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






3. An electrical instrument used to measure current






4. 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.






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






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






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






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






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






10. 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.






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






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






13. A interconnection of electrical components designed to produce a desired result. A basic circuits consists of a source - a load and an interconnecting current path.






14. Characterized by ten states or values






15. 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






16. The beginning address of a segment of memory






17. The graph of a filter's frequency response showing the change in the output voltage to input voltage ratio expressed in dB as a function of frequency for a constant input voltage






18. The main part of a computer responsible for control and processing of data; the core of a DSP that processes the program instructions






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






20. 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






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






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






23. The actual current in a branch






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






26. The process of rippling an input carry to become the output carry in a full- adder when either or both of the input bits are 1's and the input carry is a 1






27. A combined coder and decoder






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






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






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






31. In Boolean algebra - the OR operation






32. 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.






33. One of the three regions in a bipolar junction transistor






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






35. The number of protons in a nucleus






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






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






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






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






40. 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.






41. Data Terminal equipment






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






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






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






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






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






48. 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






49. 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






50. In Boolean algebra - the AND operation